Response time models of delta plots with negative-going slopes

Delta plots (DPs) graphically compare reaction time (RT) quantiles obtained under two experimental conditions. In some research areas (e.g., Simon effects), decreasing delta plots (nDPs) have consistently been found, indicating that the experimental effect is largest at low quantiles and decreases for higher quantiles. nDPs are unusual and intriguing: They imply that RT in the faster condition is more variable, a pattern predicted by few standard RT models. We describe and analyze five classes of well-established latency mechanisms that are consistent with nDPs--exhaustive processing models, correlated stage models, mixture models, cascade models, and parallel channels models--and discuss the implications of our analyses for the interpretation of DPs. DPs generally do not imply any specific processing model; therefore, it is more fruitful to start from a specific quantitative model and to compare the DP it predicts with empirical data.     

Millon Clinical Multiaxial Inventory (MCMI) scores with a collegiate sample: Long-term stability and self-other agreement

This study examined (a) the stability of the personality and symptom scales of the Millon Clinical Multiaxial Inventory (MCMI) for a sample of university undergraduates and (b) the correspondence between MCMI scores from self-report versus scores obtained from knowledgeable others who responded by describing the subject rather than themselves. The MCMI was administered to subjects during their freshman year and then again during their senior year. As in clinical populations, stability estimates in this collegiate sample were greater for the basic personality scales than for the symptom scales. Comparison of the results with those from previous studies further showed that the stability coefficients for the collegiate sample were somewhat lower overall than those from treatment follow-up studies with clinical populations. The results also showed that reasonable agreement between self- and others' ratings was obtained on most MCMI scales. The greatest agreement was found for scales that reflect more observable behaviors and relate to an introversion-extroversion dimension, whereas the least agreement was found for scales related to a psychoticism dimension. Lower levels of agreement were also found for scales having a lower mean proportion of items endorsed.This study was sponsored in part by PHS Grant R01 MH31750-01-6, by PHS Grant 5R01 AA06754-01-03, and by funds from the University of Connecticut Research Foundation and Computer Center.     

Attribution of Arousal as a Mediator of the Effectiveness of Fear-Arousing Communications1

Before watching a fear-arousing antismoking movie, male smokers were administered a placebo pill that was said to have either arousing, tranquilizing, or no side effects. Subjects reported less intention to reduce smoking when they could attribute their arousal to the presumably arousing pill, and greater intention to do so when they expected the pill to be tranquilizing, than when they expccted no side effects. The self-reported number of cigarettes smoked during a two-week period following the experiment decreased in both the tranquilizing and no side-effects conditions, but not in the arousing side-effects condition. The data on subjects' i]ntentions are consistent with predictions derived from Kelley's discounting and augmentation principles and demunstrate informational functions of affective states. Several explanations concerning the differences between intentions and behavior are discussed, and implications concerning strategies for behavior change are explored.     

Rasch-representable reaction time distributions

This article investigates properties of a representation based on the Rasch test model for reaction times (RT) that was proposed by Micko. Necessary and sufficient conditions for a set of RT distributions to be Rasch-representable are derived. It is shown that independent serial and independent parallel processing models cannot be reconciled with the representation. However, random extreme models compatible with the Reasch-representation exist that assume RT is determined by the longest or he shortest processing time of a random number of independent paraloel channels. Nonparametric properties of Rasch-representable distributions are derived that can be used for testing the model and for estimating its parameters. Conditions are presented for Rasch-representable distributions to form a scale family. Finally, Rasch-represent-able distributions are characterized interms of their hazard functions.For helpful discussions, we are grateful to Hans Irtel, Christoph Micko, Hartmann Scheiblechner, and Hans-Henning Schultz.     

What mediates the impact of response alternatives on frequency reports of mundane behaviors?

Previous research demonstrated that respondents assume that the range of precoded response alternatives reflects the researcher's knowledge of the distribution of opinions or behaviours in the population. This assumption may influence respondents' reports in two ways: respondents may either use the range of the response alternatives as a frame of reference in estimating their own behavioural frequencies, or they may be reluctant to report frequencies that appear extreme in the context of the scale. Three experiments using reports of mundane behaviours, namely watching TV and drinking beer, were conducted to differentiate between the frame of reference and the self-presentation hypothesis. The results of all studies favour the frame of reference hypothesis, and suggest that the impact of response alternatives is the more pronounced the less episodic information about the behaviour is accessible in memory. Specifically, proxy-reports were found to be more affected by the range of response alternatives than self-reports (Experiments 1 and 2), and respondents with dispositionally low access to self-related information were found to be more affected than respondents with dispositionally high access to self-related information (Experiment 3). Implications for questionnaire construction are discussed.     

Priming and communication: Social determinants of information use in judgments of life satisfaction

Two experiments examined the effects of answering a question about a specific component of life satisfaction on respondents' assessment of their overall satisfaction with life. The results suggest that the use of primed information in forming subsequent judgments is determined by Grice's conversational norms. In general, answering the specific question increases the accessibility of information relevant to that question. However, the effect that this has on the general judgment depends on the way in which the two questions are presented. When the two questions are merely placed in sequence without a conversational context, the answer to the subsequent general question is based in part on the primed specific information. As a result, the answer to the general question becomes similar to that for the specific question (i.e. assimilation). However, this does not occur when the two questions are placed in a communication context. Conversational rules dictate that communicators should be informative and should avoid redundancy in their answers. Therefore, when a specific and a general question are perceived as belonging to the same conversational context, the information on which the answer to the specific question was based is disregarded when answering the general one. This attenuates the assimilation effect. The conditions under which these different processes occur are identified and experimentally manipulated, and the implications of these findings for models of information use in judgment are discussed.     

Judgments of relationship satisfaction: Inter- and intraindividual comparisons as a function of questionnaire structure

Two experiments demonstrate that individuals use an interindividual comparison strategy to evaluate a specific life-domain if their attention is drawn to only one aspect of that domain, that has either positive or negative evaluative implications. If their attention is drawn to two aspects with opposite implications, however, an intraindividual strategy, based on the comparison of both aspects, is preferred. Whether one or two aspects bearing on a specific domain are salient is, among other conditions, a function of the number of aspects assessed in a questionnaire. Theoretical and methodological implications are discussed.     

Gender concept development of preschool-aged children in the United States and Egypt

Thirty-one American and 31 Egyptian children were given the Slaby-Frey Gender Concept Test to measure gender understanding of children from two cultures assumed to differ in level of androgyny. The subject's sex, age, parent's education, and siblings' sex and age were explored in relation to gender concept. A multivariate analysis of variance (Nationality × Sex of Subject) yielded a significant nationality effect. American children had a higher mean score on gender identity than Egyptian children. In addition, a Pearson product-moment correlation revealed significant positive relationships between the age of the subject and two gender constructs, identity and stability. Future research on specific cognitive, developmental, and cultural influences on the gender development of young children was proposed.     

Cognitive accessibility of sex role concepts and attitudes toward political participation: The impact of sexist advertisements

Women who were exposed to advertisements that portrayed women in their traditional role as homemakers reported less favorable attitudes toward political participation than women who were not exposed to advertisements. Exposure to portrayals of women as sex objects, on the other hand, did not affect women's attitudes. In contrast, men reported less favorable attitudes toward political participation after exposure to advertisements that portrayed women as sex objects, but were not affected by portrayals of women as homemakers. Implications for the influence of sex roles on political participation and the impact of sexist advertisements are discussed.