B. F. Skinner and G. H. Mead: on biological science and social science.

Skinner's contributions to psychology provide a unique bridge between psychology conceptualized as a biological science and psychology conceptualized as a social science. Skinner focused on behavior as a naturally occurring biological phenomenon of interest in its own right, functionally related to surrounding events and, in particular (like phylogenesis), subject to selection by its consequences. This essentially biological orientation was further enhanced by Skinner's emphasis on the empirical foundations provided by laboratory-based experimental analyses of behavior, often with nonhuman subjects. Skinner's theoretical writings, however, also have affinity with the traditions of constructionist social science. The verbal behavior of humans is said to be subject, like other behavior, to functional analyses in terms of its environment, in this case its social context. Verbal behavior in turn makes it possible for us to relate to private events, a process that ultimately allows for the development of consciousness, which is thus said to be a social product. Such ideas make contact with aspects of G. H. Mead's social behaviorism and, perhaps of more contemporary impact in psychology, L. Vygotsky's general genetic law of cultural development. Failure to articulate both the biological and the social science aspects of Skinner's theoretical approach to psychology does a disservice to his unique contribution to a discipline that remains fragmented between two intellectual traditions.     

Frank Weston,the Kikuyu Controversy,and the necessity of episcopacy

This article provides a historical and theological account of the controversy that erupted in 1913 when Frank Weston, Bishop of Zanzibar, appealed to the Archbishop of Canterbury, Randall Davidson, to try W.G. Peel, the Bishop of Mombasa, and J.J. Willis, the Bishop of Uganda, for ‘heresy and schism’ for their having participated in an interdenominational conference in Kikuyu in British East Africa. By agreeing to a Scheme of Federation with non-episcopal churches and holding a joint communion service at which non-conformists received communion from an Anglican Bishop, Peel and Willis had undermined the principle of episcopacy, thereby endangering the status of the Church of England as the English Section of the universal, Catholic Church. This article considers the theological arguments Weston advances for his condemnation of the Kikuyu Conference and examines his grounds for holding that episcopacy is an indispensable doctrine of the Christian faith.     

Statistical Significance Levels of Nonparametric Tests Biased by Heterogeneous Variances of Treatment Groups

The statistical significance levels of the Wilcoxon-Mann-Whitney test and the Kruskal-Wallis test are substantially biased by heterogeneous variances of treatment groups—even when sample sizes are equal. Under these conditions, the Type I error probabilities of the nonparametric tests, performed at the .01, .05, and .10 significance levels, increase by as much as 40%-50% in many cases and sometimes as much as 300%. The bias increases systematically as the ratio of standard deviations of treatment groups increases and remains fairly constant for various sample sizes. There is no indication that Type I error probabilities approach the significance level asymptotically as sample size increases.     

Quota vs positional power in four-person apex games

In coalition formation experiments, which coalitions will form and how players in coalitions will allocate their jointly gained rewards are typically predicted as a function of the players' relative power. In this paper, we isolated two logically independent sources of a player's power: the player's contribution to the rewards obtainable by coalitions of which he may be a member (“quota power”), and the number of distinct coalitions which a player may join (“positional power”). The separation of the two types of power is clearly shown in apex games, where a single player (Apex) attempts to lure any of the other players (Base) from the coalition of all Bases. A series of four-person computer-controlled apex and nonapex characteristic function games, varying with respect to the relationship of quota power to positional power, were played by 15 quartets of male players. Quota power was strongly manifested in all outcome measures, while positional power appeared only as a bias toward equal allocations of reward when coalitions among players of equal positional power formed. Neither of two social psychological theories that are applicable, pivotal power and weighted probability theory, predicted coalition frequencies. In a test of five solution concepts, the competitive bargaining set predicted payoff allocations better than either of the two aforementioned theories, the kernel, or an equal-split model.     

Metamemory and the transfer of an interrogative strategy by EMR children

EMR children were taught to produce an interrogative strategy as an aid to paired-associate learning. Interrogative training was spread over four sessions with experimenter guidance gradually faded; training was followed by tests of long-term retention for the trained items, strategy maintenance, and generalization. Metamemory was assessed prior to training and following generalization. Analysis of recall demonstrated successful maintenance and generalization of the interrogative strategy; the quality of elaborations produced by the trained children predicted recall accuracy. Importantly, metamemory pretest measures for the interrogative trained children were related to strategy use at generalization. Metamemory posttest reliably predicted recall during training, maintenance, and generalization sessions and strategy use at maintenance. Interrogative training did not noticeably improve general aspects of metamemorial knowledge.     

Reading abilities of school-age stutterers

The reading abilities of 20 school-age stutterers and their matched normally fluent controls were assessed by means of the Woodcock Reading Mastery Tests. Results indicate that the reading abilities of school-age stutterers are not significantly different from those of school-age normals. Similarly, knowing whether a subject was classified as a stutterer or normally fluent speaker was of minimal assistance in predicting the subject's reading performance. These findings suggest that school-age stutterers' reading abilities are within normal limits. An individual stutterer, just like an individual normally fluent speaker, may exhibit “reading problems”; however, caution should be employed in extrapolating from one individual stutterer's reading performance to the reading abilities of all stutterers.     

Causes of racial and socioeconomic differences in cognitive tests

Correlations among profiles of means based upon 75 cognitive variables from Project TALENT are presented for groups defined by race, socioeconomic status, sex, area of the country, and grade in high school. Sex makes by far the largest contribution to differences in shape of profiles. Race and socioenconomic status, in turn, make much larger contributions to differences than grade and area. Sex differences in shapes of profiles are a function primarily of race and, to a lesser extent, of social class. Race differences are larger than socioeconomic differences and the former, in particular, are also a function of sex. Black males differ more from white patterns than black females. There is lack of substantial overlap in the causes of race and socioeconomic differences in shape of cognitive profiles.     

The effects of cueing and constraint instructions on children's free recall performance

The performance of nursery school children was investigated in two experiments involving cued and constrained free recall. Under constrained instructions, subjects were required to recall items by category. Under cued instructions subjects could recall items in any order they wished but the organized nature of the lists was identified and subjects were told that they would remember more if they recalled things from the same category together. No effects of cueing instructions were obtained in either Experiment I or Experiment II. Constrained recall instructions led to enhanced recall and category clustering. However, the beneficial effects were not maintained on later trials with the same list or on a transfer list when the constraints on recall were dropped. In addition, the introduction of constrained recall instructions had identical effects whether they were introduced early or late in practice. The results were discussed in terms of the influences of variables which affect the subjects' use of retrieval strategies and the development of memory.