Frege's Logic

MEDIEVAI AND RENAISSANCF LOGIC

WILLIAM OFOCKHAM, Ockham's theory of propositions. Part I1 of Summa logicae. Translated by Alfred J. Freddoso and Henry Schuurman, with an introduction by Alfred J. Freddoso. University of Notre Dame Press, 1980. viii + 212 pp. £ 12.00.

WILHELM RISSE, Bibliagraphia Logica. Verzeichnis der Handschriften zur Logik. Band IV. Hildesheim, New York: Georg 0lm.s Verlag, 1979. vii + 390pp. DM 98.

G. W .F. H EGEL, Wissenschaft der Logik. Erster Band. Die objektive Logic (l812/1813) (Gesammelte Werke, Hand 11) Herausegeben von F. Hogemannund W. Jaeschhc. Hamburg: Felix hleiner Verlag, 1978. xii + 441 S. DM 118.

G.W.F. HEGEI., Wissenschaft der Logik. Zweiter Band. Die subjektive Logik (1816). (Gesammelte Werke, Band 12.) Herausgegeben von F. Hogemann und W. Jaeschke. Hamburg: Felix Meiner Verlag, 1981. viii + 358 S. DM 122.

G. GUNTHER, Idee und Grundriss einer nicht-aristotelischen Logik. Die Idee und ihre philosophischen Voraussetzungen. Appendix by R. Kaehr. Hamburg: Felix Meiner Verlag,1978,xxx + 417 + 117 pp. DM 84.

LOGIC AND PHILOSOPHY

BFN-AMI SCHARFSTEI N, The philosophers: their lives and the nature of their thought. Oxford: Basil Blackwell, 1980. x + 486 pp. £18.00.

DESMONDLEE (ed.), Wittgenstein's lectures: Cambridge 1930 - 1932. From the notes of John King and Desmond Lee. Oxford: Blackwell, 1980. xix + 124 pp. £7.95.

0. HANFLING, Logical positivism. Oxford: Basil Blackwell, 1981. viii + 181 pp. £14.00 (cloth)/£5.50 (paper).

0. HANFLING(ed.),Essenliai readings in iogicai podivihrn. Oxford: Basil Biackwell, 1981. viii + 248 pp. £5.95(paper).     

Field's Paradox and Its Medieval Solution

Hartry Field's revised logic for the theory of truth in his new book, Saving Truth from Paradox, seeking to preserve Tarski's T-scheme, does not admit a full theory of negation. In response, Crispin Wright proposed that the negation of a proposition is the proposition saying that some proposition inconsistent with the first is true. For this to work, we have to show that this proposition is entailed by any proposition incompatible with the first, that is, that it is the weakest proposition incompatible with the proposition whose negation it should be. To show that his proposal gave a full intuitionist theory of negation, Wright appealed to two principles, about incompatibility and entailment, and using them Field formulated a paradox of validity (or more precisely, of inconsistency).

The medieval mathematician, theologian and logician, Thomas Bradwardine, writing in the fourteenth century, proposed a solution to the paradoxes of truth which does not require any revision of logic. The key principle behind Bradwardine's solution is a pluralist doctrine of meaning, or signification, that propositions can mean more than they explicitly say. In particular, he proposed that signification is closed under entailment. In light of this, Bradwardine revised the truth-rules, in particular, refining the T-scheme, so that a proposition is true only if everything that it signifies obtains. Thereby, he was able to show that any proposition which signifies that it itself is false, also signifies that it is true, and consequently is false and not true. I show that Bradwardine's solution is also able to deal with Field's paradox and others of a similar nature. Hence Field's logical revisions are unnecessary to save truth from paradox.     

The seriousness of crime: A study of popular morality

This article reports the findings from a study that explored how lay people determine the seriousness of criminal offenses. While previous research on this topic has assumed that the perceived seriousness of crimes was primarily determined by differences in physical injury and economic loss, the results of this study indicate that offense seriousness is also affected by judgments subjects make about intent, motive, purpose, “fair play”, and “real harm”.     

Sexting, Catcalls, and Butt Slaps: How Gender Stereotypes and Perceived Group Norms Predict Sexualized Behavior

The current study examined the role of endorsed stereotypes about men and women and perceived peer norms in predicting three distinct types of stereotypical sexualized behaviors (verbal, physical, and indirect) among late adolescents. Two hundred and fifty U.S. college students from the mid-South (178 females, 72 males) between the ages of 17 and 19 completed a number of surveys regarding sexual gender stereotypes (e.g., men are sex-focused and women are sexual objects), perceived peer norms about the acceptability of stereotypical sexualized behaviors (SSB), and their own SSBs. Results revealed that most college students have perpetrated these SSBs at least once, and that the most common form of sexualized behavior was verbal SSB, such as rating someone’s body. Results also showed that, although the young men and women did not differ in their perpetration of indirect SSBs (e.g., sending pictures via text), young men perpetrated more verbal and physical SSB than women. For young women, endorsing the idea that men are sex-focused predicted all three types of SSB. For young men, endorsing the stereotype that men are sex-focused predicted verbal and physical SSB, and endorsing the stereotype that women are sex objects predicted physical SSB. Importantly, perceived peer group norms were a significant predictor of all three types of SSB for both women and men. Thus, the current study suggests that distinct types of stereotypical sexualized behaviors are common among college students, and are predicted by an individual’s stereotypes about men and women and perceived peer norms.     

The Relevance of Age of Onset to the Psychopathology of Social Phobia

The present study aimed to examine the relevance of age of onset to the psychopathology of social phobia using a large clinical sample of 210 patients with social phobia. The two most common periods of onset were during adolescence (ages 14–17) and early childhood (prior to age 10). Structural regression modeling was used to test predictions that early onset social phobia would be associated with greater severity of the disorder, stronger current symptoms of depression and anxiety, greater functional impairment, and more pronounced levels of emotional disorder vulnerabilities (e.g., neuroticism/behavioral inhibition, extraversion, perceptions of control). Logistic regression was used to evaluate relationships between age of onset and the presence of acute and chronic stress at the time of onset. Results showed that earlier age of social phobia onset was associated with stronger current psychopathology, functional impairment, and emotional disorder vulnerabilities, and that later age of onset predicted the presence of an acutely stressful event around the time of disorder emergence. These results are discussed in regard to their clinical implications and congruence with prominent etiological models of the emotional disorders.     

Introduction to the Special Issue: Advancing the Field of Selling and Sales Management

The authors served as Special Issue Guest Editors for this issue of JPSSM. In this introduction to the Special Issue, they discuss how the issue was conceived and produced, and express their gratitude to the many colleagues who worked to make the issue a success.     

Adapting Motivation,Control, and Compensation Research to A New Environment

The authors discuss the need to adapt research in three substantively related but paradigmatically diverse research domains (salesperson motivation, control systems, and compensation) in light of the evolving selling environment. A key objective is to suggest the desirability of integrating these literatures, which, ultimately, all seek to inform management regarding how salespeople and sales organizations can be encouraged to become more productive. The authors maintain that specification of the right goals and metrics constitutes a fundamental common denominator across the three literatures.