A computer-controlled olfactometer for fMRI and electrophysiological studies of olfaction

A design for an inexpensive and reliable olfactometer is presented. The design has several advantages for fMRI and electrophysiology investigators. These advantages include relatively rapid odorant rise times, computer control, multiple odor administration, and no ferrous materials near the subjects. In addition, the device is contamination resistant, and, because the air is neither warmed nor humidified, it is unlikely to become an incubator for bacteria. The olfactometer is constructed of off-the-shelf chromatography parts that require little modification.     

Assessing the patterns that prevent teenage pregnancy

Adolescence is a time of rapid developmental change and emotional upheaval as teenagers strive to assert their autonomy. In a similar vein, pregnancy--even under optimal circumstances with an adult mother--has been labelled a developmental crisis. Pregnancy during the teenage years has a synergistic effect, magnifying maturational changes in both the teenage girl and her infant. Recommended intervention strategies in cases of adolescent pregnancy should address not only the imminent mother-infant relationship, but the dyad's future transformations. One intervention technique is previewing, which is derived from the rhythms of adaptive exchange between mature mothers and their infants. The aim of previewing with adolescent parents is to help the teenager become more attuned to the infant's imminent developmental skills and to heighten their rapport.     

Variables affecting racial-identity salience among African Americans

The author clarified the African American racial-group identification process by addressing the issue of salience and its relationship to racial-group attitudes. A sample of 409 African American adults responded to surveys pertaining to their racial-group salience, racial-group attitudes, racial socialization, racial-group interaction, political activism, experiences of discrimination, and demographic data (e.g., sex, age, and income). The author tested 3 hypotheses: (a) Racial socialization and interaction with other African Americans are predictive of African American racial-identity salience; (b) discriminatory experiences are predictive of African American racial-identity salience; and (c) racial-identity salience is a stronger predictor of African American racial-group identification than are previously identified predictive variables (D. H. Demo & H. Hughes, 1990; V. L. Thompson Sanders, 1991, 1995). The results supported the 1st and 3rd hypotheses.     

Integration of Cognitive-Behavioral and Interpersonal Therapies for Latinos: An Argument for Technical Eclecticism

The integration of psychotherapeutic techniques is a common practice among today's clinicians. However, most discussions on psychotherapy integration have focused on general theoretical issues without attention to special populations. Latinos now represent the largest ethnic minority population in the United States and the mental health needs of this population are increasing. Although there are few controlled outcome studies that focus on Latinos, basic research suggests that integrating components of interpersonal therapy (IPT) into cognitive-behavioral therapy (CBT) may be particularly effective with this population. Specific suggestions for integrating CBT and IPT techniques are presented, and ways in which this integration can be adapted in a culturally sensitive manner are reviewed. An ethical and culturally sensitive CBT-IPT integration for Latinos requires empirical verification. Future studies on CBT-IPT synthesis should demonstrate the effectiveness of such integration relative to CBT or IPT alone.     

Boltzmann and Epistemology

Synthese - This paper is an attempt to clarify why Ludwig Boltzmann from about 1895 to 1905 seemed to adopt a series of extreme epistemological positions, ranging from phenomenalism to pragmatism,...     

Book reviews

Classical Probability in the Enlightenment. LORRAINE DASTON, 1988. Princeton, Princeton University Press. xviii + 423 pp., US$19.95 (paperback). ISBN 0–691–08497–1, 0–691–00644‐X (paperback)

Following Form and Function: a Philosophical Archaeology of Life Science. STEPHEN T. ASMA, 1996. Evanston, IL, Northwestern University Press. xiii + 232 pp., price not available

Concepts and Methods in Evolutionary Biology. ROBERT N. BRANDON, 1996. Cambridge, Cambridge University Press. xiv+221 pp., $US59.95 (hardback), $Can 27.50 (paperback). ISBN 0–521–49545–9 (hardback), 0–521–49888–0 (paperback)

The Completeness of Scientific Theories: on the Derivation of Empirical Indicators within a Theoretical Framework: the Case of Physical Geometry. The University of Western Ontario Series in Philosophy of Science, Volume 53. MARTIN CARRIER, 1994. Dordrecht, Kluwer. xviii + 248 pp., price not available. ISBN 0–7923–24757 (hardback)

The Philosophy and History of Molecular Biology: New Perspectives. Boston Studies in the Philosophy of Science, Volume 183. SAHOTRA SARKAR (Ed.), 1996. Dordrecht, Kluwer. 264 pp., $US127. ISBN 0–7923–3947–9

Awareness: What it is, What it does. CHRIS NUNN, 1996. London and New York, Routledge. price not available. ISBN 0–415–13227–4     

Indigenous Psychologies: The Meaning of the Concept and its Assessment: Introduction

La signification des concepts de psychologie indigoène et d'indigoénisation, les processus par lesquels ils se réalisent, est exploré dans les quatres premiers articles de ce numéro spécial. Les concepts sont examinés tout d' abord à partir des perspectives plus larges de la psychologie sociale des sciences (Adair) et la psychologie interculturelle (Poortinga), ainsi que dans deux applications concrètes des approches de psychologie indignée au Mexique (Díaz-Loving) et en Corée (Kim, Park, et Park). Dans la seconde partie, trois articles rendent compte des recherches empiriques évaluant l'ampleur du développement indignée en Turquie, ex-URSS, au Venezuela, et Porto-Rico. Cette introduction au numéro spécial résume quelques uns des points communs et des différences dans les contributions.
The meaning of the concepts of indigenous psychologies and of indigenisation, the process by which they are achieved, are explored within the first four articles of this special issue. The concepts are examined initially in the abstract from the broader perspectives of the social psychology of science (Adair) and cross-cultural psychology (Poortinga), and in two concrete applications of indigenous psychology approaches in Mexico (Díaz-Loving) and Korea (Kim, Park, & Park). In the second part of this special issue, three articles report on empirical research assessing the extent of indigenous development that has occurred in Turkey, the former USSR, Venezuela, and Puerto Rico. This introduction summarises some of the commonalities and differences among the contributions.     

Color spaces of color-normal and color-abnormal observers reconstructed from response times and dissimilarity ratings

With multidimensional scaling analysis, color spaces were reconstructed from reaction times (RTs) required to make same-different judgements of pairs of 15 equiluminant colors and from dissimilarity ratings between them. In addition to normal trichromats, observers with red-green color deficiency were tested. Two main purposes were served by this study: (1) to compare spatial representations of colors derived from discriminative RTs with those derived from dissimilarity measures and (2) to examine whether the task may selectively affect the dimension reflecting, in color-abnormal spaces, the deficient red-green mechanism. Contradicting our hypothesis of lower dimensionality of RT spaces, as compared with rating spaces, no consistent differences in solution dimensionality were found. However, configurations derived from the two measures diverged. The rating procedure yielded the most logical results for recovering color space. The RT configuration revealed contraction in the tritanopic direction, indicating longer color processing when the short-wavelength mechanism is involved, and in addition, for color-abnormal observers, clustering in the protanopic and deuteranopic directions, indicating even longer processing by the deficient red-green mechanism. This finding implies that RTs are suitable for detecting temporal differences in color processing but, for that very same reason, rather ill-suited for reconstructing color spaces.