The present experiments examined the extent to which two possible sources of error affect healthy subjects' performance in a rule-shift task. All 115 participants first received a discrimination learning task, in which a pair of different visual stimuli was presented on each trial, one of which had to be identified as "correct." Each stimulus…

Three mechanisms can explain second-order conditioning: (1) The second-order conditioned stimulus (CS2) could activate a representation of the first-order conditioned stimulus (CS1), thereby provoking the conditioned response (CR); The CS2 could enter into an excitatory association with either (2) the representation governing the CR, or (3) with a…

Previous work has demonstrated that drugs increasing brain concentrations of acetylcholine can enhance cognition in aging and brain-damaged organisms. The present study assessed whether galantamine (GAL), an allosteric modulator of nicotinic cholinergic receptors and weak acetylcholinesterase inhibitor, could improve acquisition and retention of…

Determining students' knowledge structure is important for assessing what a learner knows about a domain of knowledge. Traditional assessment methods are not always appropriate for exploring students' knowledge structure and changes during the learning period. This study investigates how the existing knowledge structure of the learners interacts…

Using the gaze-contingent boundary paradigm with the boundary placed after word n, the experiment manipulated preview of word n + 2 for fixations on word n. There was no preview benefit for 1st-pass reading on word n + 2, replicating the results of K. Rayner, B. J. Juhasz, and S. J. Brown (2007), but there was a preview benefit on the 3-letter…

Two experiments attempted to resolve previous contradictory findings concerning developmental trends in false memories within the Deese-Roediger-McDermott (DRM) paradigm by using an improved methodology--constructing age-appropriate associative lists. The research also extended the DRM paradigm to preschoolers. Experiment 1 (N = 320) included…

One of the ways to investigate the mental lexicon is to use word association tests. Empirical studies comparing associations by children and adults have indicated a tendency for children to give syntagmatic responses, whereas adults give paradigmatic responses. In order to investigate lexical development in L2 acquisition of Swedish we collected…

This study investigated the prediction that playful activity would increase the number of alternate uses that children would be able to give for objects which are not involved in that activity. Subjects were 36 white, middle-class preschoolers. (Author/SDH)

Presents two studies which investigated the effects of social stimulation on infant's vocalization rates. Experiment I focused on response-contingent and response-independent social stimulation. Experiment II focused on continuous or omitted social stimulation. In both studies, social stimulation increased vocalization and the rate of responding…

The focus of this report was the degree of independence of memory attributes in determining performance. A demonstration experiment indicated that memory can carry an associative attribute and a frequency attribute simultaneously with little interaction between the two, that is, they were independent in their influence on performance. The…

Humor displayed during the administration of a work association test containing a gradually increasing number of sexual double entendres was observed in college students through remote control TV facilities. Persons who hold an internal locus of control smiled and laughed more than externals. Humor was differentiated in three ways: superiority,…

To examine the relationship between words that pinpoint or help to define other words, an experiment was designed which reversed the procedure used in collecting the Michigan Restricted Associated Norms. The Michigan procedure used stimulus words to elicit responses. These responses were used as clue words to determine their power to stimulate the…

Since prior knowledge is positively linked with reading comprehension, methods of measuring prior knowledge are important. A word association test is a useful technique for evaluating topic familiarity and enables the teacher to make decisions about how much additional information is needed for students to process a text successfully. (SRT)

Preschool children's ability to associate pairs of toys was studied under one of four experimental conditions. All three subject-involvement conditions produced better learning. (ST)