Educational Research and Reviews

  • Abbreviation: Educ. Res. Rev.
  • Language: English
  • ISSN: 1990-3839
  • DOI: 10.5897/ERR
  • Start Year: 2006
  • Published Articles: 2027

Full Length Research Paper

Modeling the relationships between practitioner capacity-building practices and the behavior and development of young children with disabilities and delays

Carl J. Dunst
  • Carl J. Dunst
  • Orelena Hawks Puckett Institute, United States.
  • Google Scholar
Deborah W. Hamby
  • Deborah W. Hamby
  • Orelena Hawks Puckett Institute, United States.
  • Google Scholar
Melinda Raab
  • Melinda Raab
  • Orelena Hawks Puckett Institute, United States.
  • Google Scholar


  •  Received: 28 March 2019
  •  Accepted: 07 May 2019
  •  Published: 10 May 2019

 ABSTRACT

The manner in which family-centered capacity-building practices and parenting efficacy beliefs were directly and indirectly related to parent-child interactions and child behavior and development was investigated using meta-analytic structural equation modeling. The participants were 6507 caregivers of young children with identified disabilities and developmental delays in 13 studies. Results showed that capacity-building practices were directly related to parenting efficacy beliefs and indirectly related to parent-child interaction mediated by belief appraisals; parenting efficacy beliefs were directly related to parent-child interactions and indirectly related to child social competence mediated by parenting practices; and parent-child interactions were directly related to both child behavior and child development. Results also indicated these relationships were not moderated by parents’ education, severity of child disability, or frequency of practitioner-parent contacts. Implications for investigating the influences of social and family systems intervention practices on parent, family, and child outcomes of early childhood intervention are described.

 

Key words: Family-centered practices, capacity-building, parenting efficacy, parenting practices, child social behavior, child cognitive development.


 INTRODUCTION

Early childhood intervention involves the experiences afforded infants, toddlers, and preschoolers with identified disabilities or developmental delays and children at-risk for poor developmental outcomes to influence child behavior and development (Groark et al., 2011). This type of intervention also includes the supports provided by young children’s parents and other caregivers to promote child learning  and  development (Powell, 1988). The latter type of parent involvement has been described as the “experiences and opportunities afforded infants, toddlers, [and preschoolers] by children’s parents and other primary caregivers that are intended to promote children’s acquisition and use of behavioral competencies to…influence prosocial interactions with people and objects” (Dunst, 2007: 162).
 
It is now generally recognized that this is best accomplished when practitioners use family-centered capacity-building practices that not only benefit young children but which also support and strengthen parenting confidence and competence (Dunst and Espe-Sherwindt, 2016). Family capacity-building practices are a particular type of family-centered help giving used by early childhood intervention practitioners to engage parents and other family members in informed decision making and actions to strengthen existing capabilities and promote acquisition of new capabilities (Dunst, 2010), including, but not limited to, parenting beliefs and practices to affect child learning and development (Powell, 2003). Family-centered capacity-building practices are described in the early childhood intervention literature as enabling practices (Summers and Jenkins, 2001), participatory practices (Dunst and Espe-Sherwindt, 2016), engaging practices (Buckingham et al., 2016), collaborative practices (Espe-Sherwindt, 2008), and empowering practices (Dunst et al., 1988) as well as by other terms (Dunst and Espe-Sherwindt, 2016).
 
Findings from meta-analyses and systematic reviews of family-centered practices studies indicate that these particular types of practices are related to a host of parent, family, and child outcomes (Dempsey and Keen, 2017; Dunst et al., 2008; Thompson et al., 1997). Dunst et al. (2008), in a comprehensive review of family-centered practices research, found that participatory help giving was related to parents’ self-efficacy beliefs and both confidence and competence belief appraisals. These types of beliefs are personal judgments of one’s ability to execute actions in order to achieve desired outcomes (Bandura, 1997).
 
Self-efficacy beliefs have been used widely as a measure of the consequence or outcome of capacity-building practices and experiences (Dunst et al., 2007; Hohlfeld et al., 2018). Findings from structural equation modeling studies indicate that these belief appraisals mediate the relationship between family-centered practices and parent and child outcomes (Dunst et al., 2007; Dunst and Trivette, 2009; Thompson et al., 1997). Investigators of these studies, however, did not separate out the effects of family-centered capacity-building practices and other types of family-centered help giving and therefore the results may be confounded. The study described in the paper is part of a line of research spanning almost 40 years. This research has focused on the relationships between family-centered practices and child, parent, and family outcomes, and the manner in which these relationships are mediated by intervening variables including, but not limited to, parents belief /appraisals about executing courses of action to achieve desired goals or outcomes (Bandura, 1997; Skinner and Greene, 2008). This research has included the systematic evaluation of the manner in which family-centered capacity-building practices are directly and indirectly related to outcomes of interest using social and family systems  frameworks  (Dunst, 2017)  as  frames  of reference for testing basic tenets of these systems frameworks (Bronfenbrenner, 1994; Emery, 2014; Friedman and Allen, 2010). The outcome of this research-to-practice line of research has been the identification of the pathways of influence of family-centered capacity-building practices on parenting practices and child behavior and development.
 
Hypotheses
 
The study focused on the investigation of the relationship between family-centered capacity-building practices and parenting efficacy beliefs, and the manner in which belief appraisals mediated the influences of capacity-building practices on parent-child interactions and child behavior and development. This was accomplished using meta-analytic structural equation modeling (MASEM; Cheung, 2015) where results from different studies were combined and the structural equation model (SEM) shown in Figure 1 was the focus of investigation. MASEM combines meta-analysis and structural equation modeling in order to build a dataset and test the fit of a hypothesized model to the relationships between the variables in the model (Cheung and Chan, 2009). The hypothesized pathways of influence are highlighted in Figure 1 where the pathways are informed from prior research on the relationships among the variables in the model (Trivette et al., 2010).
 
(i) Family-centered capacity-building practices were expected to be directly related to parenting beliefs (Dunst and Dempsey, 2007; Dunst et al., 2007) and indirectly related to parent-child interactions mediated by belief appraisals (Dunst et al., 2008; Trivette et al., 2010).
(ii) Parenting belief appraisals were expected to be directly related to parent-child interactions (Coleman et al., 2002; Guzell and Vernon-Feagans, 2004) and indirectly related to child behavior and development mediated by parents’ interactional practices (Teti et al., 1996; Trivette et al., 2010).
(iii) Parent-child interactions were expected to be directly related to both child behavior and development (Landry et al., 2001; Steelman et al., 2002).
 
In addition to testing both the direct and mediated effects of the variables in the SEM, a number of moderator effects of the relationships among the SEM variables were evaluated. The moderators were parent education, severity of child disability, and frequency of practitioner-parent contacts. The extent to which each of these variables moderated the relationship between (a) family-centered capacity-building practices and parenting efficacy beliefs and (b) parenting efficacy beliefs and parent-child interactions were the focus of investigation because previous research studies and reviews have yielded contradictory findings and conclusions (Bailey et al., 2007; Crossman et al., 2018; Dempsey and Keen, 2008; Dunst et al., 2007; Dunst and Trivette, 2009; Nievar et al., 2010). The tests for moderator effects were expected to produce evidence to reconcile differences reported in previous research.
 


 MATERIALS AND METHODS

Search strategy
 
Candidate studies were located using the search terms shown in Table 1 for each of the SEM constructs in a series of separate searches (e.g., family-centered AND capacity-building AND parenting efficacy AND early intervention; parenting efficacy AND parent-child interactions AND early childhood intervention). The names of specific scales and instruments that have been widely used to assess each of the Figure 1 constructs were also searched to identify candidate studies [e.g., Family-Centered Practices Scale (Dunst and Trivette, 2002); Parenting Sense of Competence Scale (Rogers and Matthews, 2004); Maternal Behavior Rating Scale (Mahoney et al., 1986); Conners ChildBehavior Rating Scales (Conners, 1997); and Bayley Scales of Infant and Toddler Development (Bayley, 2006). More than 100 different combinations of search terms were used to identify candidate studies in each of the sources described next.
 
Controlled vocabulary and both keyword and natural language terms were used to search 12 different electronic databases (PsychInfo, ERIC, MEDLINE, Web of Science, CINAHL Plus, ProQuest Central, Academic Search Elite, Google Scholar, etc.). These searches were supplemented by examination of studies included in previous research syntheses and reviews as well as the reference sections of all located research papers. Unpublished and grey literature was located through searches of Dissertation Abstracts International, ProQuest Dissertations and Theses, Google, and 10 different grey literature databases (e.g., GreyNet International, Grey Literature Network Service, OpenGrey Database). Where possible, results were sorted by relevance in order to identify candidate studies where the results were examined until 25 consecutive  research  reports  did  not  meet  the  inclusion criteria described below. In cases where results could not be sorted by relevance, the first 100 results from each search were examined to determine if any of the studies included relevant data.
 
 
Inclusion criteria
 
No limitation was placed on candidate studies in terms of year of publication or type of research report. The abstracts of all located papers were examined to determine if the variables of interest were the focus of investigation. If no abstract was included or the relevance of the study could not be determined from the abstract, the methods section of the research reports were examined to determine if a study included the variables in Figure 1. Studies were included if at least 3 of the 5 variables on interest in Figure 1 were included, and the correlations among the measures were reported in the research reports. A unique feature of a MASEM is the fact that a study does not need to include all of the variables of interest as long as the correlations among the measures that were used are reported or can be computed (Jak, 2015). Studies that did not include all of the correlations between measured variables were excluded due to problems and concerns in estimating missing effect sizes (Cheung, 2015).
 
Search results
 
An initial pool of 157 studies was identified as candidate studies based on the review process described above. Each study was first examined to determine if three or more of the constructs of interest were the focus of investigation. Second, the studies were examined to determine if the correlations among the measures were included in the research reports. The majority of studies (69%) were excluded because they did not include measures of at least three of the relevant variables or no correlations were reported among the measures. Most of the studies were excluded because they did not include family-centered capacity-building and parenting efficacy belief measures and at least one other variable of interest.
 
The remaining studies were examined further to determine if they met the inclusion criteria. An additional 35 studies were excluded because they either did not include the correlations among all study measures or some correlations were missing or reported as non-significant. The decision to not include these studies was based on the fact that assumptions for estimating missing correlations were not met (Jak et al., 2013). The final sample of 13 studies included 6507 participants. The studies were located in eight journal articles (Bailey et al., 2007; Bruder and Dunst, 2008; Bruder et al., 2009; Dunst, 1999; Dunst et al., 2002; Dunst et al., 2007; Kolobe, 2004; Trivette et al., 1996), two monographs (Dunst et al., 2006; Shonkoff et al., 1992), two unpublished reports (Bruder and Dunst, 2006; Dunst et al., 1998), and one thesis (Holdgrafer, 1988). The average sample size in the studies was 500 (SD = 721; Range = 45 to 2586). All of the studies were conducted in the United States. Table 2 shows selected characteristics of the children receiving early childhood intervention.  All but one study reported child diagnosis. The majority of  children (78%)  had  either  identified  disabilities  or developmental delays. The average percent of children with identified disabilities was 47 (SD = 22; Range = 0 to 69) and the average percentage of children with developmental delays was 31 (SD = 17; Range = 4 to 59). The caregivers who were study participants were primarily the children’s mothers (96%). Their average ages ranged between 27 and 42 years (Range = 13 to 69). The participants’ average years of formal education ranged between 12 and 16 (Range = 0 to 22). Most of the participants (82%) were either married or living with a partner whereas the other participants were single, divorced, or widowed.
 
 
Coding scheme
 
A structured  data collection form was used to code the variables in each study and the particular scales, instruments, or methods used to measure each SEM construct. We had access to the raw data in all but one study (Kolobe, 2004). This permitted the use of different sets of study items to construct measures of a number of SEM variables where the correlations among measures could be computed. The primary variables of interest were family-centered capacity-building practices; parenting efficacy beliefs; responsive and sensitive parent interactional behavior; child social competencies; and child cognitive development.
 
Capacity-building practices 
 
Family-centered capacity-building practices were assessed in terms of parent-reported practitioner use of help giving practices that involved informed family decision-making and active family involvement in acting on those decisions (Espe-Sherwindt and Serrano, 2016). Capacity-building was measured by the participatory help giving practices subscales on the Family-Centered Practices Scale (Dunst and Trivette, 2002), Help-Giving Practices Scale (Dunst et al., 1996), and investigator-developed measures. The latter included primarily subsets of items on existing family-centered practices scales that were administered to study participants.
 
Parenting efficacy beliefs
 
Parenting efficacy was assessed in terms of parents’ judgments of their abilities to organize and execute parenting roles and responsibilities to have intended or expected child behavior consequences (Wittkowski et al., 2017). Parenting efficacy beliefs were measured by the Parenting Experiences Scale (Trivette and Dunst, 2004), Personal Assessment of Control Scale (Boyd and Dunst, 1996), Confidence in Parenting Scale (Bailey et al., 2007), and investigator-developed measures.
 
Parent-child interactions
 
Parenting practices were assessed in terms of caregiver behavior known to have development-enhancing characteristics and consequences (Richter, 2004; van IJzendoorn, 1995). This included primarily parenting sensitivity and responsiveness to child behavior initiations and interactions (Dunst and Kassow, 2008; Nievar and Becker, 2008). Parent-child interactions were measured by the Nursing Child Assessment Teaching Scale (Barnard and Kelly, 1990), Parent-Child Play Scale (Dunst, 1986), Parent Behavior Rating Scale (Dunst, 1990), and investigator-developed measures.
 
Child social interactive behavior
 
Child behavior competence was assessed in terms of prosocial behavior used by a child to initiate and sustain interactions with parents and other caregivers (Whiting et al., 1992). Prosocial child competence was measured using behavioral indicators of child interactive competencies in individual studies. This included, but was not limited to, the frequency of child positive affect, child behavior initiations, and affection toward others.
 
Child cognitive development
 
Child cognitive development was assessed using standardized measures of intellectual development (Ellingsen, 2016). This included the Bayley Scales of Infant Development (Bayley, 1993), Griffiths’ Mental Development Scales (Griffiths and  Huntley,  1996), McCarthy Scales of Children’s Abilities (McCarthy, 1972), and Wisconsin Behavior Rating Scales (Song et al., 1979). Each child’s cognitive developmental quotient was computed as mental age divided by chronological age multiplied by 100.
 
Moderator variables
 
The moderators of the relationships between the variables in the SEM were mothers’ education, frequency of parent-practitioner contacts, and child disability. Mothers’ education was measured in terms of years of formal schooling. Frequency of contacts was coded on a continuum from 4 to 5 days per week to once every 2 or 3 months. Child disability was measured on a continuum from multiple disabilities to at-risk for poor outcomes for family socioeconomic reasons. Contrast coding (Cohen et al., 2003) was used to code child disability on a continuum from multiple disabilities to at-risk for poor developmental outcomes.
 
Data preparation
 
The correlations among the variables of interest in each candidate study were first examined to determine which correlations were reported for which variables or could be computed from available data. Matrices for variables missing at random were retained for further analysis, whereas studies with variables not missing at random were excluded from further analysis. Data is considered missing at random if one or more variables of interest werenot the focus of investigation in a primary study.  In this case, “the missingness of the effect sizes in considered missing at random; that is, the missingness may depend on observed data but not on unobserved data, and the proposed SEM approach is unbiased and efficient” (Cheung and Chan, 2009). In contrast, missing data is considered non-random when variables of interest were included in a study but the correlations are reported as non-significant or not reported at all.
 
Method of analysis
 
A two-stage SEM approach was used to produce a weighted pooled correlation matrix and to perform the SEM using the pooled matrix (Cheung and Chan, 2009). The analyses were performed using the metaSEM package in R (Cheung, 2014b). At Stage 1, the homogeneity of the correlations in the different studies was evaluated in order to produce a weighted pooled correlation matrix. At Stage 2, the Figure 1 SEM was fitted to the pooled correlation matrix where different fit indices (Kenny, 2015) were used to evaluate the adequacy of the fit of the model to the data and to obtain the standardized structural equation coefficients between the variables in the SEM to determine pathways of influence. The fit indices included the chi-square test of the SEM model, the root mean square error of approximation (RMSEA), the standardized root mean square residual (SRMR), the comparative fit index (CFI), and the Tucker-Lewis index (TCI). A non-significant chi-square test indicates an adequate fit of the SEM to the data. An RMSEA and SRMR close to zero, and a CFI and TLI close to 1.0, indicates an excellent fit of an SEM to the data.
 
Random-effects analyses were performed at both Stages 1 and 2 because a Stage 1 fixed-effects analysis indicated that the correlations between certain pairwise variables were heterogeneous across studies (see results below). A Stage 1 random-effects analysis takes into consideration both between study and within study variability in estimating a weighted pooled correlation matrix (Cheung, 2014a). At Stage 2, the random-effects pooled correlation matrix is used as the input where an SEM is fitted to the patterns of relationships among the variables in the model.
 
In instances where a Stage 1 fixed-effects analysis indicates a less-than-adequate goodness-of-fit between the correlations matrices in the different studies, a Stage 1 random-effects analysis is used to identify the sources of heterogeneity using the I2 statistic which can vary between zero and 100, where values greater than 75 indicate inconsistency in the average sizes of effects between the correlation matrices in the different studies (Higgins et al., 2003). I2is “interpreted as the proportion of total variance that is due to differences between studies” (Jak, 2015: 27).

 


 RESULTS

The results for both the Stage 1 and 2 analyses are described next to show how the pooled correlation matrix was computed and how the correlation matrix was used to fit the proposed structural model. The analyses illustrate how findings from different studies can be combined and used to investigate the relationships among the variables of interest using MASEM as a data analytic strategy for identifying those relationships.
 
Stage 1 analysis
 
The goodness-of-fit indices for the Stage 1 fixed-effects analysis was χ2 (27, 6507) = 153.84, p = 0.0000, RMSEA = 0.10 (95% CI = 0.08, 0.11), SRMR = .08, CFI = 0.91, and TLI = 0.88. Because these fit indices are marginally adequate, a random-effects Stage 1 analysis was run in order to obtain the appropriate weighted pooled correlation matrix among the SEM variables. The Q statistic for the homogeneity of effect sizes was 171.69, df = 27, p = 0.0000, indicating that there was heterogeneity in the correlation matrices in the studies in the SEM.  The SEM includes 10 pairwise correlations among the five primary variables of interest. Five of the pairwise correlations had I2 = 0, one pairwise correlation had an I2 = 0.54, and four pairwise correlations had I2 values between 0.83 and 0.93. These results indicate heterogeneity among half of the study variables. 
 
Table 3 shows the random-effects pooled correlations among the study variables above the diagonal. The I2 between the pairwise correlations  are  shown  below  the diagonal. The sizes of effects between the primary variables were generally as expected. The size of effect between family-centered capacity-building practices and the other SEM variables was largest for parenting efficacy beliefs. The size of effects between parenting efficacy beliefs and the other SEM variables was largest for parent-child interactions. The sizes of effects between parent-child interactions and the two child outcome measures were also as expected. The size of effect between child social competence and child cognitive development was the smallest and unexpected.
 
Stage 2 analysis
 
The goodness-of-fit indices for the fit of the Figure 1 SEM to the data were χ2 (2, 6507) = 2.62, p = 0.2695, RMSEA = 0.01 (95% CI = 0.00, 0.03), SRMR = 0.03, CFI = 0.99, and TLI = 0.99.  The results indicate an excellent fit of the model to the data. The standardized structural coefficients for the pathways of influence among the variables in the model are shown in Figure 2. The sizes of effects for the hypothesized pathways are β = 0.43, p = 0.0000, for the relationship between family-centered capacity-building practices and parenting efficacy beliefs; β = 0.27, p = 0.0000, for the relationship between parenting efficacy and parent-child interactions; and β = 0.25, p = 0.0000, and β = 0.27, p = 0.0000, for the relationships between parent-child interactions and child social competence and child cognitive development, respectively.
 
In addition to the hypothesized pathways in the SEM, parenting efficacy beliefs were directly related to child social competence, β = 0.14, p = 0.0011, but only marginally related to child cognitive development, β = 0.10, p = 0.0700. The only pathway in the model that did not approach statistical significance was between family-centered capacity-building and parent-child interactions, β = 0.07. p = 0.2262 (Figure 2).
 
Table 4 shows the effects decomposition for the direct, indirect, and total effects for the relationships among the variables in the SEM. The direct effects are the same as those  in Figure 2. As expected, family-centered capacity- building was indirectly related to parent-child interactions mediated by parenting efficacy beliefs, β = 0.12, p = 0.0281. Contrary to expectation, parenting efficacy beliefs were not indirectly related to the two child outcome measures mediated by parent-child interactions. The results for the total effects for the relationships among the SEM variables indicate that a combination of direct and indirect effects best explain the patterns of relationships among the study measures. All of the βs for the total effects are statistically significant and highlight how the variables of interest are related in discernable ways consistent with the hypothesized patterns of relationships guiding the conduct of the MASEM.
 
 
Moderator analyses
 
The standardized structural coefficients from the tests of moderator analyses were all small  and  statistically  non-significant. The βs were all 0.06 or smaller. The results indicated that the relationships among the primary variables of interest shown in Figure 1 and Table 4 were not influenced by parent education, severity of child disability, or frequency of practitioner-parent contacts.

 


 DISCUSSION

Results from the MASEM were consistent with the hypothesized relationships among the variables in the SEM. The effects of practitioner use of family-centered capacity-building practices were traced to variations in child social competence and child cognitive development through both parenting efficacy beliefs and responsive and sensitive parenting practices. The hypothesized patterns of results were confirmed by the sizes of effects between capacity-building practices and parenting efficacy   beliefs;    parenting    beliefs    and   parent-child interactions; and parenting practices and child behavior and child development (Figure 1). The effects decomposition showed that a combination of direct and indirect effects best explained the relationships among the study variables (Table 4). The MASEM is part of a line of research and practice on investigating the manner in which family- centered practices in general, and family-centered capacity-building practices in particular, are related to parent, family, and child outcomes (Dunst, 2012; Dunst and Trivette 2010). Previously completed SEMstudies (Dunst et al., 2007, 2013), meta-analyses (Dunst et al., 2007; Dunst et al., 2008), and MASEMs (Dunst and Trivette, 2009; Trivette et al., 2010), however, included measures of different kinds of family-centered practices and measures of different kinds of self-efficacy beliefs. This was addressed in the present study by including measures of only family-centered capacity-building practices and measures of only parenting efficacy beliefs. This permitted a better determination of how these particular variables were empirically related.
 
As noted in the introduction, family-centered practices are a particular type of help giving used by practitioners (help givers) to support and strengthen help receiver competence and confidence (Dunst and Trivette, 1996; Dunst et al., 1988). Family-centered early childhood intervention practices include the help giving practices used by practitioners with parents of infants, toddlers, and preschoolers of children with and without disabilities and delays (Rouse, 2012; Tomasello et al., 2010). Capacity-building early childhood intervention practices are used by practitioners to both support and strengthen parents’ abilities to (1) provide their children development-enhancing learning opportunities (Dunst and Espe-Sherwindt, 2016; Swanson et al., 2011) and (2) obtain the resources and social supports for carrying out parenting responsibilities (Dunst and Trivette, 2011; Dunst et al., 1994).
 
Family-centered capacity-building practices are how early childhood intervention practitioners promote parents’ use of different kinds of intervention practices. The distinction between how and what continues to be misunderstood in the early childhood intervention literature (Dunst and Espe-Sherwindt, 2016). The difference between how and what was examined in the MASEM by differentiating between practitioner capacity-building (help giving) practices and parent interactional practices. The latter has been a primary focus of early childhood intervention for more than 50 years (Dyches et al., 2012) but without explicit consideration as to how practitioners support and strengthen parenting practices. Results from the MASEM indicated that family-centered capacity-building practices are indirectly related to variations in how parents interact with their children mediated by parenting efficacy beliefs. Stated differently, capacity-building practices bolster parenting beliefs, where belief appraisals, in turn, result in more effective use of parenting practices.
 
Implications for research
 
Meta-analyses of the sort described in this paper can be especially informative in terms of investigating the relationships among variables of interest. The MASEM, however, proved challenging for a number of reasons. Several are highlighted. First, only about a dozen studies were located that included at least 3 of the 5 variables that were the focus of investigation. As noted in the search results section, only 13 out on an initial pool of 150+ studies met the inclusion criteria. Second, studies that included measures of the variables of interest had quite different scales, instruments, and methods to assess the MASEM constructs. Examination of the correlation matrices in individual studies indicated considerable variability in the patterns of relationships among the study variables, contributing to the heterogeneity among the pooled correlations (Table 3). Third, the standard errors for several of the parameter estimates of the variables in the SEM were noticeably large for certain standardized structural coefficients. This would have likely suppressed the strength of relationships among measures.
 
The line of research and practice guiding the conduct of the MASEM is based on social and family systems theories where basic tenets have been used to formulate the hypothesized relationships among variables of interest (Bronfenbrenner, 1979; Emery, 2014; Friedman and Allen, 2010). These types of theories are used widely in early childhood intervention to build a case for systems intervention models and practices (Darling, 1989; Seligman and Darling, 2016; Sukkar et al., 2017).  There is, however, a lag gap between these theories and research to support basic tenets as evidenced by the small number of studies that were located and used to conduct the MASEM. Early childhood intervention researchers interested in testing complex relationships among systems variables, and especially where variable of interest differ in terms of the focus of investigation (e.g., practitioner, parent, parent-child, and child), are advised to carefully consider which variables need to be included in a study and which measures are best suited for evaluating systems effects. Otherwise, explanatory paths of influence may be overlooked where results may not capture systems complexities.
 
At least two limitations of the MASEM need to be highlighted since they have implications for further research. First, the studies in the MASEM included primarily young children with identified disabilities and developmental delays. Whether the pattern of results would be similar or different for children without disabilities or delays needs to be independently established. There is, however, no reason not to expect similar results since meta-analyses of the same or similar variables are more alike than different (Brown et al., 2008; de Wolff and van IJzendoorn, 1997; Pinquart and Teubert,  2010). The second limitation has to do with the fact that all the studies were conducted in the United States. Replication of the results would therefore need to be done in other countries to be assured the findings can be generalized to families in other countries and especially among families with diverse cultural backgrounds.


 CONFLICT OF INTERESTS

The authors have not declared any conflict of interests.

 


 ACKNOWLEDGEMENTS

The study described in this paper was supported, in part, by funding from the U.S. Department of Education, Institute of Education Sciences (#H324A110025). The opinions expressed, however, are those of the authors and no endorsement should be inferred or implied by either the Department or Institute.



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