Skepticism and Cryptography

Cryptography is an essential component of America’s national security infrastructure. Billions of dollars are spent on cryptosystems every year, in both the public and private sector. Unfortunately, the field is rife with dubious claims, snake oil salesmen, and outright fraud. This paper highlights the importance of skepticism and critical thinking in the role of evaluating and procuring cryptosystems. We discuss our experiences in teaching future leaders about testing extraordinary cryptographic claims by asking hard questions and show examples from our own experience. We believe that the rigorous application of skepticism and critical thinking in cryptography are absolutely essential to the wise use of America’s resources and the security of the nation.

The greatest magic of Harry Potter: Reducing prejudice

Recent research shows that extended contact via story reading is a powerful strategy to improve out‐group attitudes. We conducted three studies to test whether extended contact through reading the popular best‐selling books of Harry Potter improves attitudes toward stigmatized groups (immigrants, homosexuals, refugees). Results from one experimental intervention with elementary school children and from two cross‐sectional studies with high school and university students (in Italy and United Kingdom) supported our main hypothesis. Identification with the main character (i.e., Harry Potter) and disidentification from the negative character (i.e., Voldemort) moderated the effect. Perspective taking emerged as the process allowing attitude improvement. Theoretical and practical implications of the findings are discussed in the context of extended intergroup contact and social cognitive theory.     

The Social Construction of Inter-Ethnic Marriages in the Greek Cypriot (GC) Republic of Cyprus: An Ethnographic Investigation of GC Male Marriages to Eastern European (EE) Females

This exploratory ethnographic investigation attempts to delve into the intrapersonal and interpersonal gender/sexual roles and marital dynamics of Greek Cypriot (GC) male marriages to Eastern European (EE) females. European Westernization and consumerism, with its increased attention on self-actualization, sexual fulfillment, material well-being, women’s rights, and men’s parental and emotional involvement, has led, over the past two decades, to a reconfiguration of the traditional GC values and beliefs concerning appropriate male and female gender/sexual roles and identities. This, in turn, has created considerable confusion over the marital roles and expectations of GC male and female partners, who seem to be waging a difficult struggle to effectively and efficiently combine Western European and GC traditional standards in their own families. Ethnographic analysis of a limited sample of 20 GC males married to EE females indicate that the former prefer EE to GC wives because of better-reported emotional, psychological, and sexual satisfaction.     

Longitudinal effects of contact on intergroup relations: The role of majority and minority group membership and intergroup emotions

A field study was conducted in the Italian context to examine the longitudinal effects of contact on improved intergroup relations, and to test whether the effects were different for majority and minority group members. Furthermore, we examined the processes underlying contact effects. Participants were 68 Italian (majority) and 31 immigrant (minority) secondary school students, who completed a questionnaire at two time points. The results of regression analyses showed that, consistent with the contact hypothesis (Allport, 1954 ), quantity and quality of contact longitudinally improved outgroup evaluation and increased the attribution of positive stereotypes to the outgroup; the reverse paths were non‐significant. Notably, whereas quantity of contact improved intergroup attitudes and stereotypes for both majority and minority participants, quality of contact had reliable effects only for the majority group. Intergroup anxiety and empathy mediated the longitudinal effects of quantity of contact for both Italians and immigrants; the cross‐lagged effects of contact quality on criterion variables for the Italian group were mediated by intergroup empathy. The theoretical and practical implications of findings are discussed. Copyright © 2010 John Wiley & Sons, Ltd.     

Memory Span for Arabic Numerals and Digit Words: Evidence for a Limited-capacity, Visuo-spatial Storage System

Six experiments examined the determinants of the numeral advantage effect: the finding that memory span for Arabic numerals (1, 2, 3, etc.) is greater than for digit words (one, two, three, etc.). The speed of item identification for numeral and digit words was unrelated to memory span for the same items and a larger memory span for numerals persisted under concurrent random generation (Experiment 1). The numeral advantage, however, was abolished when the items were presented in random locations within an invisible 3x3 grid (Experiment 2) and in locations on a horizontal plane that ran contrary to the natural direction of reading (Experiment 3). When the items were presented in the same location, a disruption of the spatial component of visuo-spatial working memory eliminated the numeral advantage (Experiment 4), whereas interference with the visual component of the system did not (Experiment 5). When the items were spatially distributed in a 3x3 matrix, however, neither visual nor spatial interference abolished the effect (Experiment 6). Taken together, these findings suggest that the numeral advantage effect is mediated by discrete components in visuo-spatial working memory dedicated to the temporary storage and renewal of visual codes and questions the assumption that the underlying mechanisms in immediate, visual serial recall are equivalent between stimulus categories.