Optimal assertions,and what they implicate. A uniform game theoretic approach

To determine what the speaker in a cooperative dialog meant with his assertion, on top of what he explicitly said, it is crucial that we assume that the assertion he gave was optimal. In determining optimal assertions we assume that dialogs are embedded in decision problems (van Rooij 2003) and use backwards induction for calculating them (Benz 2006). In this paper, we show that in terms of our framework we can account for several types of implicatures in a uniform way, suggesting that there is no need for an independent linguistic theory of generalized implicatures. In the final section, we show how we can embed our theory in the framework of signaling games, and how it relates with other game theoretic analyses of implicatures.

Equivalence of paper and pencil vs Internet forms of the ZKPQ-50-CC in Spanish and French samples

This study was designed to check for the equivalence of the ZKPQ-50-CC (Spanish and French versions) through Internet on-line (OL) and paper and pencil (PP) answer format. Differences in means and deviations were significant in some scales, but effect sizes are minimal except for Sociability in the Spanish sample. Alpha reliabilities are also very similar in both versions with no significant differences between formats. A robust factorial structure was found for the two formats and the average congruency coefficients were 0.98. The goodness-of-fit indexes obtained by confirmatory factorial analysis are very similar to those obtained in the ZKPQ-50-CC validation study and they do not differ between the two formats. The multi-group analysis confirms the equivalence among the OL–PP formats in both countries. These results in general support the validity and reliability of the Internet as a method in investigations using the ZKPQ-50-CC.     

The sunk‐time effect: An exploration

We explored the potential for a sunk‐cost effect in the realm of time. Questionnaire studies (Experiments 1–4) obtained a sunk‐time effect that was robust to manipulations of prospective value, individual versus group consequences, and the effort or enjoyment inherent in the time. Behavioral experiments (Experiments 5–7) also suggested a sunk‐time effect and found support for a personal responsibility by sunk‐cost interaction on choice behavior. We discuss theoretical implications and a potential connection to animal sunk‐cost phenomena. Copyright © 2008 John Wiley & Sons, Ltd.     

The MCMI-III personality disorders scores predicted by the NEO-FFI-R and the ZKPQ-50-CC: a comparative study

This study was designed to compare the NEO-FFI-R versus the ZKPQ-50-CC in their relationships with the fourteen MCMI-III personality disorder scales in a Spanish non-clinical sample (N = 674). Previous studies showed consistent relationships between the Five Factor Model and the DSM-IV personality disorders (PD), but there is no comparative study between both Five Factor and Zuckerman's personality models. The aim was to replicate previous results about relationships between the Big-Five and PDs using the revised short version of the NEO-PI-R, and to compare the NEO-FFI-R versus the ZKPQ-50-CC regarding the relationships with MCMI-III personality disorder scales. Results showed no sharp differences between the NEO-FFI-R and ZKPQ-50-CC scales. Each instrument explained around 30% of the PDs MCMI-III scales variance. Using conjointly the 10 personality scales from the NEO-FFI-R and ZKPQ-50-CC, the PDs accounted variance rose to 38%. Differences and similarities between both short personality questionnaires are discussed.     

Slower eating rate reduces the food intake of men, but not women: implications for behavioral weight control

This study tested a central tenet of behavioral weight control: does slower eating rate reduce food intake and positively affect appetite ratings. This study used direct behavioral observation of participants' (n=48; 25BMI35) eating behavior using Universal Eating Monitors. Food intake and ratings of "desire to eat" (collected each minute during meals) were represented as a function of time. Based on an acclimation meal, participants' eating rate was modified by instructing them to eat a bite of food when prompted by a computer, which generated three types of meals: (1) baseline (eating rate was the same as the acclimation meal), (2) reduced-rate (eating rate was reduced by 50%), and (3) combined-rate (eating rate at the beginning of the meal was identical to that of the acclimation meal, subsequently eating rate was reduced by 50%). All meals were ad libitum. Slower eating rate during the reduced-rate and combined-rate meals resulted in less food intake compared to the baseline meal for men, but not women. Ratings of desire to eat, normalized for the amount of food consumed, were lower during the combined-rate meal for men and women. Thus, this basic premise of behavioral weight control was supported for men, but not for women.     

Ingroup and outgroup stereotypes and selective processing

The main concern of the two studies presented here is to investigate whether the different nature of ingroup and outgroup stereotypes is reflected in different selective processing of ingroup and outgroup information. It was predicted that when processing ingroup information people will preferentially encode stereotype-inconsistent information as compared to stereotype-consistent information, whereas the reverse pattern will hold when people process outgroup information. In addition to selective processing, response bias due to stereotyping was studied. To measure selective processing and response bias, recognition memory measures derived from the theory of signal detection were used. Results of the two studies confirmed our main prediction. Also, response bias was demonstrated. ©1997 John Wiley & Sons, Ltd.     

Screening for cognitive impairment in an Australian aged care assessment team as part of comprehensive geriatric assessment

Accurate detection of mild cognitive impairment (MCI) is important to stratify and address risk. Yet, few short cognitive screening instruments are validated for this. . In Australia, all clients referred to an Aged Care Assessment Team (ACAT) receive comprehensive geriatric assessment (CGA) including the Standardized Mini-Mental State Examination (SMMSE). We compared the accuracy of the quick mild cognitive impairment (Qmci) screen to the SMMSE in 283 participants: 195 with dementia, 47 with MCI, and 41 with subjective cognitive decline (SCD) in an Australian community-based ACAT. Both had similar accuracy in identifying dementia, AUC of 0.86 for the Qmci versus 0.93 for the SMMSE (p = 0.10), but the Qmci was more accurate than the SMMSE in differentiating MCI from SCD, AUC of 0.84 versus 0.71, respectively, p = 0.046. These suggest that the new, short (3–5 min) Qmci screenis appropriate for use in an ACAT or other units conducting CGA.     

The Discriminatory Gesture: A Psychoanalytic Consideration of Posttraumatic Reactions to Incidents of Racial Discrimination

This article provides a basic psychological conceptualization of racial trauma. It considers how seemingly minor instances of bias or discrimination can lead to posttraumatic reactions, the proportions of which can be hard to understand from the outside. I propose to describe this non-extraordinary event of racially biased treatment as the discriminatory gesture in order to emphasize its fluidity and pervasiveness as an interpersonal event. Being the subject of a discriminatory gesture represents a unique source of trauma, particularly because it derives its destructive power from its occurrence in a wider contemporary context of pervasive racism, white supremacy, and the historical context of slavery.     

Personality and culture: a comparison of Francophones and Anglophones in Québec

The authors compared the personality characteristics of Québec Francophones (25 women, 25 men) and Anglophones (25 women, 25 men) aged 16-64 years. Each participant completed a French or English version of 3 personality inventories that measured (a) extraversion (2 scales), (b) neuroticism (2 scales), (c) psychoticism, (d) lying, (e) openness to experience, (f) conscientiousness, (g) agreeableness, (h) conservatism, and (i) altruism. Francophones scored higher than did Anglophones on psychoticism and on 1 measure of extraversion, and Anglophones scored higher than did Francophones on conservatism, but the 2 groups did not differ on the other personality traits. Men scored higher than did women on psychoticism, and women scored higher than did men on conscientiousness and agreeableness. Conservatism and altruism increased with age. The authors discuss the results in the context of cross-cultural theory and research on personality.