Purpose of the Study: Missing data are a common problem encountered while implementing measurement instruments. Yet the extent to which reliability, validity, average discrimination and difficulty of the test results are affected by the missing data has not been studied much. Since it is inevitable that missing data have an impact on the…

The development of theory of mind (ToM) in infancy has been mainly documented through studies conducted on a single age group with a single task. Very few studies have examined ToM abilities other than false belief, and very few studies have used a within-subjects design. During 2 testing sessions, infants aged 14 and 18 months old were…

This study explores the developmental change of mother-child interactions in order to investigate which aspects of maternal behavior affect children's speech production. To this end, the interactions between 79 German-speaking mothers and their two- or five-year-old children were observed at two time points (12 months apart) and in two interactive…

The purpose of this study is to test the effect of educational leadership on some organizational variables using meta-analysis method. In this context, the results of independent researches were merged together and the hypotheses created within the scope of the study were tested. In order to determine the researches to be included in the study,…

Online courses play an increasing role in professional development of environmental educators, yet little information is available on the interactive processes involved in online learning. We examined the relationship of three types of interactions in an urban environmental education online course--participant-participant, participant-instructor,…

Evidence is accumulating that early intervention can be effective in improving the skills of young children with autism spectrum disorder. However, the science is hampered by the lack of agreed "gold standard" tools for the measurement of progress and outcome. What is required is a reliable, valid, and sensitive measure of change in the…

This study considered the linguistic forms used by 63 English-speaking Canadian children from kindergarten to second grade (ages 5;6-8;8) to introduce, maintain reference to, and reintroduce primary and secondary characters throughout their narratives The expected referring forms were used more frequently for the best-matching referential…

Idiom comprehension and production reflect a child's language competence. Research suggests that there is a positive relationship between children's reading comprehension skills and their idiom understanding. This study examines whether adult verbal scaffolding, in conjunction with the deliberate use of iconic gestures, can facilitate young…

Preschoolers, as a group, are highly attuned to causality, and this attunement is known to facilitate memory, learning, and problem solving. However, recent work reveals substantial individual variability in the strength of children's "causal stance," as demonstrated by their curiosity about and preference for new causal information. In…

Introduction: Observational research using the thin slice technique has been routinely incorporated in observational research methods, however there is limited evidence supporting use of this technique compared to full interaction coding. The purpose of this study was to determine if this technique could be reliability coded, if ratings are…

How individuals construct narratives involving attachment figures (e.g., parents) should reflect their representation of those individuals as either comforting or unsupportive (Bowlby, 1969). Similarly, how individuals talk about parents' childhood experiences may also reflect their attachment representation. Sixty-five 13- to 16-year-old…

The aim of this study was to develop and validate an observer-based coding system for the characterization and completion of homework assignments during Behavioral Activation (BA). Existing measures of homework completion are generally unsophisticated, and there is no current measure of homework completion designed to capture the particularities…

Background: Expressed emotion (EE) is a measure of family emotional climate found to be predictive of symptom levels in a range of psychiatric, medical, and developmental disorders, including autism. Method: Employing data from 104 mothers of children with autism, this study examines the Autism-Specific Five Minute Speech Sample (AFMSS), a…

In a sample of 711 ethnically diverse adolescents, the observed interpersonal dynamics of dyadic adolescent friendship interactions were coded to predict early adulthood tobacco, alcohol, and marijuana use. Deviant discussion content within the interactions was coded along with dyadic coregulation (i.e., interpersonal coordination, attention…

Experimental studies demonstrate that contrast helps toddlers to extend the meanings of novel adjectives. This study explores whether antonym co-occurrence in spontaneous speech also has an effect on adjective use by the child. The authors studied adjective production in longitudinal speech samples from 16 children (16-36 months) acquiring eight…