The widespread influence of the Rescorla-Wagner model

The theory of Pavlovian conditioning presented by Robert Rescorla and Allan Wagner in 1972 (the Rescorla-Wagner model) has been enormously important in animal learning research. It also has been applied in a variety of areas other than animal learning. We summarize the contribution of the Rescorla-Wagner model to research in verbal learning, social psychology, human category learning, human judgments of correlational relationships, transitive inference, color aftereffects, and physiological regulation. We conclude that there have been few models in experimental psychology as influential as the Rescorla-Wagner model.     

The use of the mental development index of the Bayley scale to diagnose language delay in 2-year-old high-risk infants

To determine if a detailed analysis of the language items of the Bayley Scales of Infant Development (BSID) would be useful in detecting language delay, the Bayley Mental Development Index (MDI) and Reynell Developmental Language Scales (RDLS-R) were administered to 137 low-birthweight infants at 2 years of age. In spite of scores in the normal range on the BSID, many of these children had significantly delayed language. However, the children with delayed language could be detected on the basis of detailed analysis of certain language items of the MDI, indicating that these items are more useful than the total MDI score.     

Apparent movement detection in the pigeon

Pigeons were trained to discriminate between the presence and absence of apparent movement in visual displays. Generalization gradients obtained on the dimension of speed indicated a broad range of movement detection. Extremely accurate discrimination performance on displays varying in direction of movement suggested formation of a "movement concept".     

Color name as a function of wavelength and instruction

A series of experiments were performed to determine the effects of instructions upon color naming data. Although color name is basically a function of stimulus wavelength, even slight changes in the response categories available for the 5 led to substantial changes in the pattern of Ss’ response allocation.     

A comparison of personality characteristics, family relationships, and drug-taking behavior in low and high socioeconomic status adolescents who are drug abusers

Low socioeconomic status (SES) and high SES adolescents who met the DSM-III criteria for drug abuse were compared with respect to personality characteristics, family relationships, and drug-taking behavior. SES was determined by parents' income, education, and occupation. The two groups did not differ significantly with respect to self-esteem, quality of family relationships, impulse control, moral development, and drug-taking behavior. However, high SES adolescents were more depressed (p less than .009) and more anxious (p less than .02) than low SES adolescents, and these findings lent support to the argument that low and high SES drug abusers differ in personality and therefore require different kinds of treatment interventions.     

The rationality of science,critical thinking,and science education

This paper considers two philosophical problems and their relation to science education. The first involves the rationality of science; it is argued here that the traditional view, according to which science is rational because of its adherence to (a non-standard conception of) scientific method, successfully answers one central question concerning science's rationality. The second involves the aims of education; here it is argued that a fundamental educational aim is the fostering of rationality, or its educational cognate, critical thinking. The ramifications of these two philosophical theses for science education are then considered, and a science education which takes reasons in science as its fundamental feature is sketched.It is notwhat the man of science believes that distinguishes him, buthow andwhy he believes it. His beliefs are tentative, not dogmatic; they are based on evidence, not on authority or intuition (Russell 1945, p. 527).I believe ... that all teaching [in science] on the University level (and if possible below) should be training and encouragement in critical thinking (Popper 1970, pp. 52–53).This paper is mainly drawn from other publications. The first section is taken from my (1985); the second from (1988), Chapter 2; and the third from (1988), Chapter 6. Since what appears here are truncated versions of those discussions, I urge interested readers to look to those other works for fuller treatments of the issues here discussed.