Separate experiments focusing on attention to multiple stimuli, psychological refractory period, and motor coordination demonstrated that emergent aspects of the whole situation must also be considered. Performance under divided attention reflected an interaction between resource limitation, single task processes, and emergent aspects of the whole…

Used Visual Expectation Paradigm to describe information processing changes and individual differences during first year of life. Found regular age changes in mean reaction time and variability but not in minimum reaction time, suggesting that growth rate of sensory-detection information is constant during first year but age changes occur in level…

Speculates on underlying processes for the reaction time variance and age differences in anticipation latency using the Visual Expectation Paradigm. Discusses the dichotomization of reactive and anticipatory behavior, limitations of longitudinal designs, drawbacks in using standard procedures and materials, and inferences that can be made…

Suggested that strategy choices for solving addition problems were related to numerical and spatial ability domains, while the speed of executing the component process of fact retrieval was related to arithmetic ability only. Findings supported the convergent validity of the strategy choice model and its discriminant validity. (RH)

A microcomputer program providing extensive and constantly changing practice with 35 irregular French verbs in 6 tenses is described. The program's objectives are to establish lateral associations between tense forms, provide continuous opportunity for recall, and shorten correct response time. (Author/MSE)

Examines and compares the costs and response times of traditional interlibrary loan services and four commercial document delivery suppliers based on a study conducted by Vassar College libraries through the OCLC Interlibrary Loan subsystem. Results are reported that indicate commercial services were usually no more efficient but were more…

Reports on reaction time experiments investigating subject-verb agreement and null subjects in 33 Korean learners of German and a control group of 20 German native speakers. Results found that the two phenomena do not covary in the Korean learners, indicating that properties of agreement and null subjects are acquired separately from one another.…

Illustrates some of the analytic tools and conventions associated with the construction and evaluation of dynamic models of the processes underlying learning, memory, and development. Describes a study finding that children may exhibit slower disintegration of verbatim memory traces than adults due to interference; however, adults may be more…

The effects of CD-ROM networking on system response time was studied at McGill University using WilsonDisc, Dialog OnDisc, and Silver Platter. Using a 10-station local area network, response times were measured for searches using index terms, truncation, and the Boolean "and." Results show that increased numbers of users increased…

Choice reaction time and simple reaction time were measured for 147 young adults for whom significant positive correlation between nerve conduction velocity in a brain nerve pathway and nonverbal intelligence was previously found. Results suggest that two largely independent neurophysiological processes affect intelligence. Differences in choice…

Mental-rotation task response times from 12 studies involving 505 adults--251 males and 254 females--were used to evaluate 5 hypotheses concerning sex differences derived from an X-linked genetic model. The model assumes that task facilitation in speed of mental rotation is mediated by a recessive gene. Four hypotheses derived from the model were…

Discussion of limiting response time for students' answers focuses on a study of Israeli elementary students that investigated the effects on their performance of increasing the response time in computer-assisted instruction (CAI) for arithmetic drill and practice. Effects on high- versus low-aptitude students, and younger versus older, are…

Effects of varying the complexity of written Chinese characters in a lexical decision task were studied for 40 adult Chinese students. Results suggest that complexity affects reaction time when subjects identify characters they often read. Theoretical implications are discussed in terms of the interaction of basic perceptual processes and…

Discusses the evaluation of search engines and uses neural networks in stochastic simulation of the number of rejected Web pages per search query. Topics include the iterative radial basis functions (RBF) neural network; precision; response time; coverage; Boolean logic; regression models; crawling algorithms; and implications for search engine…

A study examined the executive functioning, in particular the attentional set-shifting deficits in Australian individuals ages 6-20 with high-functioning autism (n=12) and Asperger's disorder (n=12). Results indicate that individuals with autism had a deficiency in shifting from local to global processing, however, this was not observed in…