Ribot, Binet, and the emergence from the anthropological shadow

In the drive to establish a naturalistic psychology in France, anthropological assumptions about a hierarchy of physically determined racial groups with inherent psychological characteristics and about the nearly insurmountable retardation of primitive cultures permeated the work of the founder of French empirical psychology, Théodule Ribot. Assumptions about the correlation of brain mass and head size with intelligence affected Alfred Binet. The rise of sociology and challenges to existing theories of inheritance led Ribot to surrender fitfully some hereditarian assumptions. Binet's experimental caution and contemporary critiques of anthropometry tempered, but did not fully extinguish, his enthusiasm for psychophysical correlations.     

A comparison of tactile and blurred visual form perception

Two experiments were performed to assess the similarity of tactile form perception and visual form perception under conditions of extreme visual blurring. In the first experiment, resolution and relative localization tasks were performed by five subjects under both tactile and blurred visual presentation. The results obtained here were the same for the two modalities. In the second experiment, all 26 block letters were presented to each of four subjects in two distinct methods of presentation, using both tactile and blurred visual displays. In one method, the full-field letter was flashed for 1.0 sec; in the other, a vertical slit scanned the letter from left to right. For all method comparisons, a strong similarity was found between the patterns of correct responses as a function of letter. In addition, there was a definite similarity between the two modalities in terms of which letters improved in recognizability in the change from the full-field to the slit mode of presentation. However, the overall superiority of the slit method found for tactile recognition was not obtained visually. The two experiments indicate that recognition with blurred vision is similar to recognition using the intact cutaneous sense, although some differences remain.     

Early education,intellectual development,and school performance: A reply to Arthur Jensen and J. McVicker Hunt

In this response to the critiques by Arthur Jensen and J. McVicker Hunt, we focus on three issues that clarity the results and conclusions of our original paper. These issues include the meaning of g, the permanence of effects produced by early education, and the educational significance of IQ gains produced by early education programs. In addition, since the nature of longitudinal studies insures the accumulation of new data to test and refine conclusions drawn from earlier data, we begin by briefly summarizing new data from our study pertinent to these three issues.     

A factor analytic study of the Stanford Binet with young children

Seven factors were found as the result of a factor analysis of year IV-6 through year VI of the 1960 Revision of the Stanford Binet Intelligence Test. No factor had a sufficient number of high loadings to justify interpretation as ‘g’, a general intelligence factor. The test protocols used were of 152 children from three to seven years of age who attended a University nursery school or Head Start day care centers. The group included 107 white and 45 Negro children who had been tested as part of a routine intellectual evaluation. The socioeconomic level, as measured by occupation of the parent, was higher than that of the standardizing population of the Binet, as was the mean IQ (109.4 ± 14.7). The results of this study were compared with the logical analysis of Meeker & Bonsall based upon Guilford's factors of the intellect, and with Valett's profile analysis.     

A comparison of sniff bottle staircase and olfactometer-based threshold tests

Olfactometers have been gaining popularity as research tools, but they have yet to replace established testing procedures in a variety of laboratory and clinical settings, including absolute threshold tests. In this research, we designed and operated a simple olfactometer with which to assess threshold. To do this, we used a method-of-adjustment test that was compared to the three-alternative forced choice ascending sniff bottle staircase method, which is currently a standard threshold test procedure. We found that the olfactometer threshold test correlated highly with the staircase method, and that it possessed suitable test–retest reliability. The advantages of the olfactometer threshold test include faster test time and reduced cleaning and reassembly demands. Future use of the olfactometer in olfactory identification and/or detection thresholds amongst odors is also outlined.     

Factorial and construct validity of the revised short form integrative psychotherapy alliance scales for family, couple, and individual therapy

The Integrative Psychotherapy Alliance model brought an interpersonal and systemic perspective to bear on theory, research, and practice on the psychotherapeutic alliance. Questions have been raised about the independence of the theoretical factors in the model and their operationalization in the Individual, Couple, and Family Therapy Alliance Scales. This paper presents results of a confirmatory factor analysis of the scales that delineated at least three distinct interpersonal factors as well as shorter versions of the three scales to facilitate their use in research and practice. The paper also presents the results of a study testing each factor's association with client retention and progress over the first eight sessions in individual and couple therapy. At least two of the interpersonal factors were uniquely associated with progress in individual and couple functioning. Implications of the results for theory, research, practice, and training in individual, couple, and family therapy are elaborated.     

Effects of test anxiety, tests, and sleep on children''s performance

This study examined the interrelationship between children's test anxiety, sleep, and performance. The subjects, 239 sixth and seventh graders, responded to questionnaires examining sleep behavior and test anxiety on a day when they had a major exam in school, and on a day when they did not. They also completed a vigilance task on both days. The results showed that partial sleep loss (i.e., under 3 hr) did not adversely influence subjects' performance on the vigilance task or on the actual class exam. However, the results did reveal that test anxiety was negatively related to performance on the class exam.     

Statistical criteria for parallel tests: A comparison of accuracy and power

Parallel tests are needed so that alternate forms can be applied to different groups or on different occasions, but also in the context of split-half reliability estimation for a given test. Statistically, parallelism holds beyond reasonable doubt when the null hypotheses of equality of observed means and variances across the two forms (or halves) are not rejected. Several statistical tests have been proposed for this purpose, but their performance has never been compared. This study assessed the relative performance (type I error rate and power) of the Student–Pitman–Morgan, Bradley–Blackwood, and Wilks tests of equality of means and variances in the typical conditions surrounding studies of parallelism—namely, integer-valued and bounded test scores with distributions that may not be bivariate normal. The results advise against the use of the Wilks test and support the use of the Bradley–Blackwood test because of its simplicity and its minimally better performance in comparison with the more cumbersome Student–Pitman–Morgan test.     

A comparison of implicit memory tests in schizophrenic patients and normal controls

The objective of the current study was to compare the performance of schizophrenic patients and normal controls on implicit memory tests. Two neuropsychological tasks were administered to 29 patients and normal participant samples. The implicit tests were: Word fragment completion and Word production from semantic categories. The priming score was the variable of interest. Priming effects are obtained in normal subjects and schizophrenia patients, regardless of the implicit test used. However, a dissociation in priming between normal and patient groups was observed, depending on the test used. For word fragment test, priming was identical between the two groups. However, for word production, priming obtained in schizophrenics was lower than priming in normal controls. Results confirm a dissociation effect in implicit memory tests. These results could be explained in the context of the Roediger and Blaxton (1987) distinction between data-driven and conceptually-driven processing. This evidence suggests that a complete neuropsychological assessment of memory in schizophrenia should include different kinds of implicit memory tests (procedural, perceptual, and conceptual tasks).