Adaptation is automatic

Two experiments were used to test whether selective adaptation for speech occurs automatically or instead requires attentional resources. A control condition demonstrated the usual large identification shifts caused by repeatedly presenting an adapting sound (/wa/, with listeners identifying members of a /ba/-/wa/ test series). Two types of distractor tasks were used: (1) Subjects did a rapid series of arithmetic problems during the adaptation periods (Experiments 1 and 2), or (2) they made a series of rhyming judgments, requiring phonetic coding (Experiment 2). A control experiment (Experiment 3) demonstrated that these tasks normally impose a heavy attentional cost on phonetic processing. Despite this, for both experimental conditions, the observed adaptation effect was just as large as in the control condition. This result indicates that adaptation is automatic, operating at an early, preattentive level. The implications of these results for current models of speech perception are discussed.     

Decoding the language of the heart: Developing a physiology of inclusion

Constructs such as homeostasis and fight/flight have supported a scientific approach to physiology that has yielded a vast database of obvious heuristic value. Yet in spite of its value, these constructs have tended to create a mind-set that unwittingly supports what this article has labeled a “physiology of exclusion.” Reinforced by the philosophy of René Descartes, this perspective has led investigators to focus on isolated or separate animal organisms that are reflexively wired for self-preservation. It has created a mind-set in which both research investigators and the public at large tend to view the human body as either in a steady state of vigilance, maximally prepared for fight/flight, or in a state of quiescence. Assumptions of the solitary body, and solitary man wired to react for “self” preservation, has made it difficult to incorporate a growing body of evidence that indicates that social support and loving relationships are conducive to good health. It also has made it difficult for investigators to fully understand why human loneliness is a major cause of premature death. This article delineates these trends and offers a new construct, one that suggests that a “physiology of inclusion” be added to the prevailing view of a “physiology of exclusion.” Recent cardiovascular research is cited to help underscore the potential heuristic value of this new physiological construct.     

Teaching experimental psychology with on-line computers

The purpose of this paper is to describe the use of on-line computers in the teaching of experimental methodology. Computer models are featured.     

Appropriateness of anxiety and drive for affiliation

Anxiety was induced in first/only born and later born subjects by the threatened injection of a harmless drug. Perceived appropriateness of the induced anxiety was manipulated by the experimenter's suggestion that anxiety over an injection was either perfectly natural (appropriate condition) or to be found only in rather nervous and effeminate men (inappropriate condition). The results indicated that the anxiety induction was successful, but that the perceived appropriateness of the anxiety determined the tendency to affiliate. Subjects in the appropriate condition showed a significantly greater tendency to affiliate than did subjects in the inappropriate condition. Birth order was related to anxiety on one of two measures, but was not implicated in the determination of the affiliative tendency.     

Structural models and occupational aspirations: Black-white variations among deep-south adolescents

Multivariate techniques for attribute data and the backward elimination procedure developed in regression analysis were utilized in an analysis of the occupational aspirations of deep-south adolescents. An examination of the models constructed revealed that: (1) social class indicators accounted for the largest effect estimates; (2) residence was associated with a smaller, yet statistically significant portion of the variation; and (3) the effect of race was negligible when controls were applied. Application of the most efficient model to black and white subsamples revealed race variations in both composite effect estimates and the rank order of effect estimates. Implications of these findings are discussed in terms of the developmental model of occupational choice and suggestions for further research are presented.     

Masking of and by tactile pressure stimuli

Masking of and by tactile pressure stimuli was investigated in six Ss as a function of stimulus intensity (force) and stimulus onset asynchrony. Increase in the force of the masked stimulus and decrease in the force of the masking stimulus were inversely related to the magnitude of masking, as defined by either a relative or an absolute decrease in sensitivity. The introduction of stimulus onset asynchrony produced both forward and backward masking, the latter being of somewhat larger magnitude. Comparisons are made with results obtained in visual metacontrast masking.     

TIME CONSERVATION ACROSS CULTURES

L'auteur tente de determiner si les enfants appartenant à des cultures non occidentales perçoivent le temps de la même manière que les enfants occidentaux, s'ils se conforment aux stades de Piaget, et si L'âge auquel ces stades se réalisent correspond approximativement à ce que trouve Piaget. Les échantillons ont été tirés de sept cultures: anglo (Blancs), mexicaine-américaine, et indiennes (Hopis, Pimas, Papagos, Apaches et Navajos). Avec un total de 317 sujets, L'étude a porté, dans chaque groupe culturel, sur quinze enfants de sept, neuf et onze ans respectivement. Quatre épreuves ont été utilisées pour mettre en évidence la conservation du temps: deux épreuves sur la conservation de L'ordre des événements, et deux épreuves sur la conservation de la simultanéité. Les résultats font apparaître une très grande variabilité avec L'âge; dans le cas de la simultanéité, aucun groupe culturel n'atteint le critère, proposé par Piaget, de 3/4 de réponses correctes, même aux âges où cette capacité, selon Piaget, est atteinte. En ce qui concerne la conservation de L'ordre nécessaire des événements, seuls les enfants mexicains-américains, anglos et pimas ont acquis cette capacité à L'âge de onze ans. En ce qui concerne la conservation de L'ordre naturel, seuls les Navajos et les Apaches n'ont pas cette capacité à L'âge de onze ans.