Intraindividual variability (IIV) in cognitive speed, or moment-to-moment changes in ability, is a developmental phenomenon indicative of neurological integrity that increases gradually across adulthood. Past research has shown that IIV negatively covaries with cognitive performance, in which higher IIV at one occasion is associated with poorer…

The etiology of individual differences in general verbal ability, verbal learning and letter and category fluency were examined in two independent samples of 9- and 18-year-old twin pairs and their siblings. In both age groups, we observed strong familial resemblance for general verbal ability and moderate familial resemblance for verbal learning,…

Examines two sets of variables that influence age-related patterns of text recall--the effects of verbal ability level and text structure variables on text recall of younger, middle-aged, and older adults. Results indicate that age differences in the discovery and utilization of the organizational structure of texts were found to be mediated by…

Cognitive self-instructional (CSI) programs have been successful in improving problem-solving skills in many, but not all, children. The importance of understanding the influence of subject characteristics in self-control studies, while often ignored in actual research, has been repeatedly advocated verbally. This paper presents a study designed…

Investigated children's understanding of meaning of the cognitive verb "know" (as defined by an abstractness and conceptual difficulty hierarchy). Found that knowledge increased with development, and low levels of meaning were mastered before high levels, and more rapidly. Understanding in audio-taped stories was more difficult than in video-taped…

Reading encompasses a wide range of verbal processes, among them such simple verbal processes as word decoding, letter recognition, name retrieval, and semantic access. The question is whether simple verbal processing differences are adequate to account for general reading ability differences. Across different verbal domains and different ages,…

This study examining children's ability to organize information for the purpose of recall was designed to control for verbal ability differences. The participants were 10 boys and 10 girls each from kindergarten, 2nd, 4th and 6th grades. A modified "Simon Says" game was used to enable the children to respond to eight selected verbal and motor…

Sixty young men between 18 and 26 years of age and 60 within the 65-75 year age range, matched for verbal ability and socioeconomic status, were given two paired associate learning tasks differing in level of difficulty under neutral, supportive, and challenging instructions. Older persons revealed a greater performance decrement on the more…

Forty blind children (ages 6 to 14, IQ's 65 to 132) in residential schools were studied to discover the relationship of verbalism to age, intelligence, experience, and personal adjustment. The children were given 40 selected words to obtain definitions, experience claims, and visually oriented verbalism scores. They then tried to identify items…

This study examines ways in which children verbalize emotional experiences at successive age levels. Four groups of 16 boys and girls each drawn from the second, fourth, sixth, and eighth grades of a middle class private school in New York City were asked to describe happiness, sadness, love, anger, and fear. Raw protocols were scored according to…