Every Choice Function Is Backwards‐Induction Rationalizable

A choice function is backwards‐induction rationalizable if there exists a finite perfect‐information extensive‐form game such that for each subset of alternatives, the backwards‐induction outcome of the restriction of the game to that subset of alternatives coincides with the choice from that subset. We prove that every choice function is backwards‐induction rationalizable.     

Book reviews

Nurturing nature and the nature of science: Toward transcendence

As Nature Made Him: The Boy Who was Raised as a Girl. By John Colapinto. New York: HarperCollins, 2000, 288 pages. Cloth, $26.00.

The pedagogical value of as nature made him: The boy who was raised as a girl

As Nature Made Him: The Boy Who was Raised as a Girl. By John Colapinto. New York: HarperCollins, 2000, 288 pages. Cloth, $26.00.

What Americans Learned About Sex

Teaching America About Sex: Marriage Guides and Sex Manuals from the Late Victorians to Dr. Ruth. By M. E. Melody and Linda M. Peterson. New York: New York University Press, 1999, 304 pages. Cloth, $28.95.

Teen romance under the microscope

The Development of Romantic Relationships in Adolescence. Edited by Wyndol Furman, B. Bradford Brown, and Candice Feiring. New York: Cambridge University Press, 1999, 443 pages. Cloth, $49.95.

All hail the penis

Phallacies [Video]. Directed and produced by Vishnu Mathur. 2000. Available from Bullfrog Films, P. O. Box 149, Oley, PA 19547, www.bullfrogfilms.com. VHS, $250.     

Psychiatric Impact of Gender-Related Abuse Across the Life Course of Male-to-Female Transgender Persons

The psychiatric impact of interpersonal abuse associated with an atypical presentation of gender was examined across the life course of 571 male-to-female (MTF) transgender persons from the New York City Metropolitan Area. Gender-related abuse (psychological and physical), suicidality, and Diagnostic and Statistical Manual of Mental Disorders (4th ed., text revision) major depression were retrospectively measured across five stages of the life course using the Life Chart Interview. Among younger respondents (current age of 19–39), the impact of both types of abuse on major depression was extremely strong during adolescence and then markedly declined during later stages of life. Among older respondents (current age of 40–59), the impact of both types of abuse on major depression was strong during adolescence and then marginally declined during later stages of life. The effects of both types of abuse on suicidality were weaker but more consistently observed across the life course among both the younger and older respondents. Gender-related abuse is a major mental health problem among MTF transgender persons, particularly during adolescence. As these individuals mature, however, the consequences of this abuse appear less severe, which may represent the development of moderately effective mechanisms for coping with this abuse.     

The Portuguese Republic

The findings and recommendations of researchers and specialists in thinking-skill learning and teaching have important implications for classroom efforts to improve student thinking. This summary identifies various types of thinking skills and skill components recommended for classroom instruction. The author describes and cites research-derived features of effective, direct instruction in thinking skills and describes a framework for this instruction. He also describes researcherand specialist-recommended teaching techniques and lesson strategies for introducing any thinking skill, guiding continuing skill practice, and teaching students to transfer thinking skills to other contexts. He presents researcher recommendations of when, where, and why such direct skill instruction can be effectively provided. The research cited here suggests both students' academic achievement and their quality of thinking can be improved by using these techniques and strategies to teach thinking skills in subject-matter courses.     

Content Analysis of CDQ From 1994–2003: Implications and Trends for Practitioners and Researchers From a Decade of Research

A review of the content of The Career Development Quarterly (CDQ) was conducted for the period between 1994 and 2003. In total, 297 articles were published in CDQ during this period. The content analysis was based on content, authorship, and institutional affiliation. The principal areas of research were career development: life‐span perspectives and women's workforce participation. Of the articles published during this period, 33% fell into 1 of these 2 categories. Compared with the previous analysis (W. Buboltz & M. Savickas, 1994), a change was noted in the amount of research in women's workforce participation, which rose from 1.4% to 12.8%, whereas research on career development interventions fell by approximately 50%. The authors discuss implications and areas for future research.     

Modifications of the Bonferroni-Holm procedure for a multi-way ANOVA

We present step-wise test procedures based on the Bonferroni-Holm principle for multi-way ANOVA-type models. It is shown for two plausible modifications that the multiple level α is preserved. These theoretical results are supplemented by a simulation study, in a two-way ANOVA setting, to compare the multiple procedures with respect to their simultaneous power and the relative frequency of correctly rejected false hypotheses. Financial support of the Deutsche Forschungsgemeinschaft is gratefully acknowledged.     

On Property and Exploitation

The authors contend that what can legitimately be owned in a free society is only rights to physical property, not to the value thereof. You are thus free to undermine the value of our property by underselling us, by inventing a new substitute for our property, etc. But you cannot legitimately physically agress against our property, even if its value remains constant despite your efforts. This revised version was published online in July 2006 with corrections to the Cover Date.