We tested human performance on the Euclidean Traveling Salesman Problem using problems with 6-50 cities. Results confirmed our earlier findings that: (a) the time of solving a problem is proportional to the number of cities, and (b) the solution error grows very slowly with the number of cities. We formulated a new version of a pyramid model. The…

Describes recent experiments at Cornell University; at schools in East Cleveland, Tennessee, North Carolina, and Kentucky; and at Middle Island School in Brookhaven, New York. (MLF)

This paper describes three experiments which demonstrated the presence of binaural perception abilities (the ability to use both ears) in 4-month-old but not in 2-month-old infants. All of the experiments employed a visual fixation habituation-dishabituation paradigm in which infants were given a series of visual fixation trials while binaural…

Confirmed the hypothesis that those in the three-dimensional instructional group would make fewer confusion errors that those in the two-dimensional instructional group on a transfer task in reading. (RB)

To investigate human visual identification of different-sized objects as identically shaped, matching reaction times were measured for pairs of simultaneously presented random figures. (Editor)

Studies employing schematic faces of three features explored the role of the left hemisphere as an analytic processor in difficult discriminations and the role of the right hemisphere in easy gestalt matches. (Editor)

This paper presents a summary of the findings of the Color Meaning Test I (CMT I), descriptions of the revised Color Meaning Test II (CMT II), and a discussion of the theories of the development of color and racial bias in young children. CMT II data are reported on 160 Euro-American and 160 Afro-American children, ages 40 to 91 months. (Author/CS)

An investigation of memory development using nonmetric multidimensional scaling. Judgments of similarities between complex objects were obtained from 5-year-olds and adults under two conditions: (1) when objects were simultaneously present at the time of comparison, and (2) when the objects were not simultaneously present and had to be compared on…

Four experiments examined the effect of label training on redintegrative memory for novel shapes (remembering the whole shape when only a part is presented). (Editor)

Study supported in part by a grant from the Research Council of the University of Massachusetts.

Based on PhD thesis submitted to Brown University (June 1967).

Preparation of this paper supported by U.S. Public Health Grant HD-0890, a grant from the Carenegie Corporation, and by U.S. Public Health Grant HD-2680.

Research conducted at Fels Research Institute and supported in part by grants HD-00868, FR-00222, and FR-05537 from the National Institute of Mental Health.