A probabilistic choice model, based on L. L. Thurstone's Law of Comparative Judgment Case V, is developed for paired comparisons data about psychological stimuli. The model assumes that each stimulus is measured on a small number of physical variables. An algorithm for estimating parameters is illustrated with real data. (SLD)

This study of the haptic processing of 9 children with specific language impairment and 9 normal-language children (ages 5-7) found that both groups performed similarly when the response modality was tactile and task requirements were minimal and performed differently when response demands included cross-modal processing or increased symbolic and…

Two alternative instruction conditions (modeling and imitation) were used to teach a novel morpheme, embodied in a visual symbol system, to 21 children (ages 5-6) with specific language impairment (SLI) and 2 peer groups. Results indicated that imitation practice afforded assistance to children with SLI and their age-matched peers in morpheme…

A stimulus equivalence procedure for the acquisition of English and Spanish words was evaluated with two adolescents having head injuries. Following training on one task, subjects attained and maintained high scores on all matching-to-sample tasks. Results suggest the procedure is effective for teaching foreign language skills to head-injured…

A study involving elementary school students in three age groups examined two explanations for the finding that young children tend to classify objects according to similarity relations, whereas adults emphasize dimensional structure. Results countered the view that children perceive objects according to a more primitive holistic structure. (RH)

Findings of four investigations involving five through seven year olds suggest that, even though children can make relatively accurate judgments of their knowledge states, they tend to overestimate their competence when assessing their knowledge in relation to performance on a task. (RH)

Describes electronic clustering, an evaluation strategy that graphically reveals students' higher level thinking skills. (MG)

The derivation of the variance of similarity judgments is made from the 3-D process in nonlinear psychophysics. The idea of separability of dimensions in metric space theories of similarity is replaced by one parameter that represents the degree of a form of interdimensional cross-sampling. (SLD)

Describes the nineteenth-century parlor trick entitled the Fluttering Heart phenomenon which uses a red heart on a bright blue background. Discusses theories concerning the apparent fluttering. Suggests doing the trick with a red light-emitting diode in a darkened room. (MVL)

Groups of young, middle-aged, and older adults (60 each) were randomly assigned to a keyword illustration, keyword imagery, or control treatment. Illustration facilitated recall for all, imagery only for young and middle-aged adults. Illustration had a significant effect for older adults only when verbal ability was considered. (SK)

Three experiments examined 4- and 6-month-olds' sensitivity to the unity of a partly occluded moving rod undergoing translation, rotation, or oscillation. Findings suggested that all types of common motion were not equivalent for specifying infants' perceptions of occluded objects. (Author)

A study investigated whether 26 adolescents and young adults with Down syndrome experienced more difficulty in finding words to name familiar objects and sounds than 26 subjects with mental retardation due to other causes. Results found no evidence of syndrome-specific word-finding difficulty in accuracy or speed. (Author/CR)

Compares musicians' responses while listening to the first movement of Haydn's Symphony No. 104 using a two-dimensional continuous response digital interface that measured arousal (relaxing-exciting) and affect (ugly-beautiful). Indicates that there is an inverse relationship between the two dimensions. Makes comparisons to research that has…

Three experiments used a visual fixation technique to examine whether toddlers interpret speech continuously. Found that 24-month-olds had delayed responses when a competing distractor picture's label overlapped phonetically with the target at onset, but not when the pictures' labels rhymed, showing that children monitored speech stream…

Three experiments examined the hypothesis that individual differences in look-duration during infancy covary with different modes of visual intake and encoding, with longer look-durations reflecting encoding based on prolonged inspection of local visual properties, and briefer durations reflecting encoding based on a global, or global-to-local…