The purpose of this study was to investigate the feasibility and validity of a modified version of Buschke's missing scan methodology, the Missing Scan Task (MST), to assess working memory capacity (WMC) and cognitive control processes in preschool children 3-6?years in age. Forty typically developing monolingual English-speaking children between…

Relational complexity (RC) theory conceptualizes an individual's processing capacity and a task's complexity along a common ordinal metric. The authors describe the development of the Latin Square Task (LST) that assesses the influence of RC on reasoning. The LST minimizes the role of knowledge and storage capacity and thus refines the…

Testing procedures developed on younger groups are often inadequate when testing the elderly. Special tests and administration techniques that increase the likelihood that elderly examinees will do their best are described. Psychological examiners must receive special training in testing to do a credible job with the elderly. (Author/BEF)

Cognitive aging research needs to clarify whether or not there are functional or ability declines with aging and, if so, to understand and mediate these declines. Recent research which has demonstrated declines in cognitive functioning with age has involved episodic memory and rehearsal-independent forms of such memory. It is not known how much of…

Investigated whether children's ability to recognize themselves in delayed video feedback indicates change in self awareness. Parallel results in both conditions studied, and the likelihood of false positives and false negatives indicate that the video test in its present form may not be a valid measure of differences in self-awareness. (Author)

The Stroop Color-Word Test was administered to 1,856 cognitively screened, healthy Dutch-speaking participants aged 24 to 81 years. The effects of age, gender, and education on Stroop test performance were investigated to adequately stratify the normative data. The results showed that especially the speed-dependent Stroop scores (time to complete…

Administered neuropsychological tests to alcoholic subjects before and after their participation in two weeks of memory training, training in problem-solving techniques, or no training. The problem-solving group showed greater improvement on problem-solving tests but not on memory or perceptual-motor tests. Younger subjects in the memory training…

Simple and complex learning and problem solving situations were employed with mentally retarded children and adults. In the Rotation-Discrimination Complex and the Size-Discrimination Simple experiments, upper and lower test achievement subgroups were subjected to two basic types of visual discrimination at different levels of task complexity.…