Groups of eight- and ten-year-olds and adults visually searched for the presence of a target letter or number in fields of items that were either of the same or a different category (letter or number) than the target. (JMB)

Two experiments were conducted to determine the effect of aging on encoding and response selection stages of a choice reaction time task. Results suggested reducing stimulus discriminability may affect information processing prior to the encoding stage, but the encoding stage is the primary locus of the slowing which accompanied aging. (Author)

In seven studies, 7300 U.S., 891 Iranian, 534 Indian, and 216 Ghanaese persons aged four to 99 were interviewed regarding their consciousness. There were cross-national differences. (Author)

A visual search task was used to assess developmental changes in elementary school children's selective attention to specified portions of a visual display. (Author/SB)

Developmental changes in a variety of cognitive processes as a function of age and schooling were examined in 160 rural Guatemalan children aged 5, 7, 9 and 11 years. (BD)

Two experiments were conducted to examine developmental changes from middle childhood to adolescence in metaretrieval plans offered to solve different retrieval problems. (Author/JMB)

Two sets of tasks designed to measure operational thinking and the problem-finding skill of asking general questions were administered to 7-, 9-, and 11-year-old children. Analyses performed on the quality of the children's questions revealed developmental trends consistent with earlier work on problem finding. (Author/JMB)

Discusses studies investigating children's processing of pictorial information focusing on the "conceptual peg" and response availability hypothesis, the covert verbalization hypothesis, production deficiency hypotheses, the "failure to read" hypothesis and explanations derived from frequency theories. (SB)

According to Humean framework, relations are judged to be causal to extent that they are characterized by regularity, continuity, and covariation among college students and college-bound 11- and 14-year-olds. Presents subjects with information about one of the following indices: potential causal factor covaried with effect and potential causal…

Analyzes sex-related differences between mental rotation rate and spatial ability among adults, 14-year-olds, and 9.5-year-olds to determine the extent to which rotation rate is a correlate of various abilities. (HOD)

Examines, in three experiments, infant sensitivity at 20, 30, and 36 weeks of age to 3-dimensional structure of a human form specified through biomechanical motions. Findings are interpreted as suggesting that infants, by 36 weeks of age, are extracting fundamental properties necessary for interpreting a point-light display as a person. (Author/BE)

In this developmental study of sustained cognitive monitoring, second graders, sixth graders, and college students followed a two-part sequence of spatial directions and then made judgments about reaching the destination intended by direction giver. Cognitive monitoring skills of the type examined appear to be useful in many real-world cognitive…

A stages-of-learning model was used to examine effects of picture-word manipulation on storage and retrieval differences between disabled and nondisabled grade 2 and 6 children. Results showed that disabled students are poorer at memory tasks and in developing the ability to reliably retrieve information than nondisabled children. (Author/RH)

Investigates, among delinquent and nondelinquent subjects ages 10 to 11 and 14 to 15 years, differences exhibited on moral reasoning tasks, social problem solving/metacognition, effects of clues on performance on a social problem-solving task, effects of age, and the interaction of age and delinquency. (Author/RH)

Two experiments examined the determinants of children's belief or disbelief of statements made to them by other children. In both, the personal characteristics of the child transmitting the message were varied against message type and age of child receiving the message; transmitter characteristics were relative age and social dominance. (RH)