Single trial methods reveal unimpaired free recall of unrelated words in Asperger's syndrome (AS). When repeated trials are used (free recall learning), typical individuals show improved recall over trials, subjective organization of material (SO) and a correlation between free recall and SO. We tested oral (Experiment 1) and written (Experiment…

Increasing working memory (WM) capacity is often cited as a major influence on children's development and yet WM capacity is difficult to examine independently of long-term knowledge. A computational model of children's nonword repetition (NWR) performance is presented that independently manipulates long-term knowledge and WM capacity to determine…

The involvement of genetic and environmental factors to the development of obsessive compulsion symptoms during the adolescent period is examined. Study revealed that individual differences in OC symptoms are heritable during puberty and shared environmental influences played a role only in the beginning of adolescence but no sex differences in…

We evaluated the statistical power of single-indicator latent growth curve models to detect individual differences in change (variances of latent slopes) as a function of sample size, number of longitudinal measurement occasions, and growth curve reliability. We recommend the 2 degree-of-freedom generalized test assessing loss of fit when both…

Developmental exceptionalities span the range of learning abilities and encompass children with both learning disorders and learning gifts. The purpose of this article is to stimulate thinking about these exceptionalities, particularly the complexities and variations within and across people. Investigators tend to view learning disabilities or…

Purpose: The present study examined the extent of genetic and environmental influences on individual differences in children's conversational language use. Method: Behavioral genetic analyses focused on conversational measures and 2 standardized tests from 380 twins (M = 7.13 years) during the 2nd year of the Western Reserve Reading Project (S. A.…

A system of PK-16 parental choice would look much more like the current situation in early education and in postsecondary education than like the system of K-12 neighborhood schools. The changes required would provide more options for a tailored or customized educational experience for each child than those now offered by the K-12 public school…

The purpose of this study was to identify and analyse specific instances of transactive communication as children engaged in a paired melody writing task using a computer-based composing environment. Transactive communication has been identified as one of the features of general collaborative engagement that is most helpful in an educational…

The phonological awareness (PA), vocabulary, and word reading abilities of 19 children with cochlear implants (CI) were assessed. Nine children had an implant early (between 2 and 3.6 years) and 10 had an implant later (between 5 and 7 years). Participants were tested twice over a 12-month period on syllable, rhyme, and phoneme awareness (see…

This research examined the component structure and concurrent validity of an uplift measure that included a group of interpersonal day-to-day events. The two studies sought to extend previous research that showed interpersonal events to be missing from a prominently employed uplift measure. Study 1 (n = 289) highlighted nine uplift subscales that…

A latent-change scaling model for the analysis of repeated-measures multiple-choice data is presented. The model extends previous work by combining latent class analysis and low dimensional scaling techniques in a longitudinal framework where subjects may change their preferences for the response categories over time. The latent structural…

The current study examined the neuropsychological correlates of memory accuracy in older and younger adults. Participants were tested in a memory monitoring paradigm developed by Koriat and Goldsmith (1996), which permits separate assessments of the accuracy of responses generated during retrieval and the accuracy of monitoring those responses.…

We examined individual differences in shame responding in early childhood and predictive relations with shame proneness in middle childhood. Child shame responding, parental shaming, and child temperamental inhibition were assessed at Time 1 (n = 225, aged 3-4 years), shame responding was reassessed at Time 2 (n = 199, aged 5-7 years), and shame…

In 2007-08 and 2008-09, 2,500 randomly-selected middle school students completed an annual survey on school climate and character development. In examining differences based upon grade, gender, race/ethnicity, school, and length of program participation, significant differences were found for all but length of program participation. Responses of…

We are grateful to the commentators for providing many stimulating and valuable observations. The main point of our article was to call attention to the overestimation of individual differences correlations in a subset of neuroimaging papers. To structure our discussion of these comments, we list the main points from our paper, note where…