Empirical versus subjective procedures for identifying gender differences in science test items

When judgmental and statistical procedures are both used to identify potentially gender-biased items in a test, to what extent do the results agree? In this study, both procedures were used to evaluate the items in a statewide, 78-item, multiple-choice test of science knowledge. Only one item was flagged by the sensitivity reviewers as being potentially biased, but this item was not flagged by the statistical procedure. None of the nine items flagged by the Mantel-Haenszel procedure were flagged by the sensitivity reviewers. Eight of the nine statistically flagged items were differentially easier for males. Four of these eight measured the same category of objectives. The authors conclude that both judgmental and statistical procedures provide useful information and that both should be used in test construction. They caution readers that content-validity issues need to be addressed when making decisions based on the results of either procedure.     

Screening for problem parenting: preliminary evidence on a promising instrument

This paper reports on efforts aimed toward the development of more effective procedures for identifying mothers who are at elevated risk for problems in parenting. We present data from two independent samples of known maladaptors and corresponding comparison mothers and report on our attempts to cross-validate a promising screening instrument composed of items that index social support and parenting attitudes. The resultant 20-item scale correctly identified over 90% of maladaptive and comparison mothers. When this scale was cross-validated on a second independent sample of maladaptors and comparison mothers, it was again almost 90% accurate. Issues concerning the field application of this promising instrument are discussed and its possible limitations are considered.     

A SPECIAL‐PURPOSE STUDIO

The paper describes the design and use of a studio system which arose out of the need to give demonstrations of experimental procedures to practical classes of up to 150 students. Since the requirements could be specified in some detail it was possible to use novel methods of working which turned out to be very efficient and economical.     

“Project Screen” — A Follow‐up Study of a Pre‐school Screening Battery

This study examines a pre‐school screening survey battery with an aim to validate it in terms of predicting school performance. Subjects participating in the screening were tested at the end of their first year at school. Analysis of the data, using a canonical correlation procedure, suggested elimination of a number of test items ‐‐ age, sex, age of walking, socio‐economic rating, Draw‐a‐Man Test, balance and posture, body image, perceptual motor match, height and weight. Measures of general ability, visual discrimination, visual reception, general development, receptive language, language concepts and positional concepts were the best predictors of school performance.     

Mnemonic-strategy reduction of prose-learning interference

One hundred and sixty college students read three fictitious biographical passages according to either imagery-mnemonic or no-strategy control instructions. In one mnemonic condition, subjects formed separate images involving each biographical name and its associated facts: in another mnemonic condition, the biographical name and its associated facts were integrated within a single composite image. Relative to an interference-control condition, integrated mnemonic subjects recalled more factual information, whereas separate mnemonic subjects did not. In addition, the recall of integrated mnemonic subjects was statistically no different from that of a noninterference control condition, whereas the recall of separate mnemonic subjects was lower. Both theoretical and educational implications of the results are discussed. The first author’s contribution to this work was supported by an Organized Research Grant from the Graduate School of Illinois State University. The second author’s contribution was supported by the National Institute of Education under Grant No. NIE-G-81-0009 to the Wisconsin Center for Education Research and was facilitated by a Romnes Faculty Fellowship from the Graduate School of the University of Wisconsin, Madison.     

Successive reversals of a discriminated preference for signaled tailshock

Three rats received unmodifiable tailshock at random intervals in a shuttlebox. In a continuous-choice situation, Ss could choose between an auditory signal immediately preceding or immediately following the tailshock. Over repeated daily 3-h sessions, each S acquired a spatial discrimination indicating a strong preference for the signal preceding tailshock. This preference continued undiminished through two successive reversals of the position associated with signaled shock. This demonstration precludes explanations of the preference-for-signaled-shock phenomenon based upon primary reinforcement value or acquired value of the signal, position preferences, and overt modification of the aversiveness of the reinforcer through such means as postural adjustments. An explanation of recent failures to obtain the preference-for-signaled-shock effect is offered.     

Teaching Psychobiology at a Distance

Psychobiology is an area of knowledge that deals with the biological basis of behaviour. Its concretion as a specific area of study originates in the confluence and development of other areas such as physiological psychology, experimental and comparative psychology, ethology, biology and the neurosciences. For some, psychobiology would be that part of the neurosciences that deals with the study of the processes of emotion, motivation, cognition and learning. Others are of the opinion that it covers a much wider area, and that its objective is rooted in the study of all biological mechanisms that govern behaviour — and these, undertaken from a philogenetic and ontogenetic perspective.

In the last decade, we have witnessed the creation of psychobiology departments throughout the world. These departments participate in the teaching of faculties of medicine, psychology, biology and zoology. In some universities, these departments even contribute to the teaching imparted by the faculties of philosophy and educational sciences. Sooner or later, the universities teaching at a distance had to consider the creation of departments of psychobiology to attend to the up‐dating of the curriculum of diversive faculties.

In the National University of Education at a Distance, U.N.E.D. (Madrid, Spain) the teaching of psychobiology is entrusted to a department of the same name which started during the academic year of 1982–83. Even though the experience is very short to be able to advance a complete evaluation, the difficulties encountered in the organization of the form and content of different courses imparted by the department of psychobiology (D.P.) could be useful to the reader. Therefore, these difficulties must be understood within the educational model of teaching at a distance at U.N.E.D.