Parkinson's patients have been found to be impaired in learning movement sequences. In the current study, patients with unilateral basal ganglia lesions due to stroke were tested on a serial reaction time task in which responses were based on the spatial location of each stimulus. The spatial locations either followed a fixed sequence or were…

A framework is developed to rigorously test an entire class of memory retention functions by examining hazard properties. Evidence is provided that the memory hazard function is not monotonically decreasing. Yet most of the proposals for retention functions, which have emerged from the psychological literature, imply that memory hazard is…

A formative intervention was employed to expose children to a variety of words to increase the breadth, or size of their vocabularies, and to repeatedly and supportively expose children to words to increase the depth, or semantic understanding of vocabulary. Science content words were selected since they are less likely to be included in an…

Lower cognitive ability is a risk factor for some forms of severe psychiatric disorder, but it is unclear whether it influences risk of psychological distress due to anxiety or the milder forms of depression. The participants in the present study were members of two British birth national birth cohorts, the 1958 National Child Development Survey…

In this study, the authors examined the extent to which children's self-regulation upon kindergarten entrance and classroom quality in kindergarten contributed to children's adaptive classroom behavior. Children's self-regulation was assessed using a direct assessment upon entrance into kindergarten. Classroom quality was measured on the basis of…

The aim of the present study is to adapt a scale of self-efficacy towards online technologies which was developed by Miltiadou and Yu (2000) to Turkish. In order to adapt the scale, first, the scale items were translated to Turkish by the researchers. Then, a translation form was further developed by consulting eight specialists. These English and…

The increase in the squared multiple correlation coefficient ([Delta]R[squared]) associated with a variable in a regression equation is a commonly used measure of importance in regression analysis. The coverage probability that an asymptotic and percentile bootstrap confidence interval includes [Delta][rho][squared] was investigated. As expected,…

The aim of this study was to examine parameters affecting age differences in eyeblink classical conditioning in a large sample of young and middle-aged rabbits. A total of 122 rabbits of mean ages of 4 or 26 mo were tested at inter-stimulus intervals (ISIs) of 600 or 750 msec in the delay or trace paradigms. Paradigm affected both age groups…

The present research sought to investigate the role of the basal ganglia in timing of sub- and supra-second intervals via an examination of the ability of people with Parkinson's disease (PD) to make temporal judgments in two ranges, 100-500 ms, and 1-5 s. Eighteen non-demented medicated patients with PD were compared with 14 matched controls on a…

A theory of prospective time perception is introduced and incorporated as a module in an integrated theory of cognition, thereby extending existing theories and allowing predictions about attention and learning. First, a time perception module is established by fitting existing datasets (interval estimation and bisection and impact of secondary…

This article provides researchers with a guide to properly construe and conduct analyses of conditional indirect effects, commonly known as moderated mediation effects. We disentangle conflicting definitions of moderated mediation and describe approaches for estimating and testing a variety of hypotheses involving conditional indirect effects. We…

This study examined outcomes for 320 youth in a Center for Mental Health Services system-of-care demonstration site. Youth received wraparound-only (n = 213), MST-only (n = 54), or wraparound + MST (n = 53). Participants were 12 years old on average and mostly White (90%), and 75% were Medicaid-eligible. Service use and functional and clinical…

The four types of ionic equilibria--acid-base, redox, precipitation, and complexation--have certain similarities, which has led some authors to develop a unified treatment of them. These authors have highlighted the common aspects and tried to find a systemization of the equilibria that would facilitate learning them. In this unified treatment,…

Children are diagnosed with AD/HD more often than any other disorder and interventions are needed in schools to increase on-task behavior. Most studies examining on-task behavior are conducted in special education classrooms or clinical laboratories. Previous studies have not combined video self-modeling and self-monitoring as an intervention to…

The nation's recent economic problems underscore the urgency of addressing the challenges that low-income families face. The current economic downturn will exacerbate what already are troubling trends in Colorado--namely, that too many children in the state live in poverty and these numbers are growing rapidly. Until updated data are available, it…