Modern robust data analysis methods: measures of central tendency

Various statistical methods, developed after 1970, offer the opportunity to substantially improve upon the power and accuracy of the conventional t test and analysis of variance methods for a wide range of commonly occurring situations. The authors briefly review some of the more fundamental problems with conventional methods based on means; provide some indication of why recent advances, based on robust measures of location (or central tendency), have practical value; and describe why modern investigations dealing with nonnormality find practical problems when comparing means, in contrast to earlier studies. Some suggestions are made about how to proceed when using modern methods.     

How to produce personality neuroscience research with high statistical power and low additional cost

Personality neuroscience involves examining relations between cognitive or behavioral variability and neural variables like brain structure and function. Such studies have uncovered a number of fascinating associations but require large samples, which are expensive to collect. Here, we propose a system that capitalizes on neuroimaging data commonly collected for separate purposes and combines it with new behavioral data to test novel hypotheses. Specifically, we suggest that groups of researchers compile a database of structural (i.e., anatomical) and resting-state functional scans produced for other task-based investigations and pair these data with contact information for the participants who contributed the data. This contact information can then be used to collect additional cognitive, behavioral, or individual-difference data that are then reassociated with the neuroimaging data for analysis. This would allow for novel hypotheses regarding brain–behavior relations to be tested on the basis of large sample sizes (with adequate statistical power) for low additional cost. This idea can be implemented at small scales at single institutions, among a group of collaborating researchers, or perhaps even within a single lab. It can also be implemented at a large scale across institutions, although doing so would entail a number of additional complications.     

Individualist and collectivist norms: when it's ok to go your own way

We conducted two studies to investigate the influence of group norms endorsing individualism and collectivism on the evaluations of group members who display individualist or collectivist behaviour. It was reasoned that, overall, collectivist behaviour benefits the group and would be evaluated more positively than would individualist behaviour. However, it was further predicted that this preference would be attenuated by the specific content of the group norm. Namely, when norms prescribed individualism, we expected that preferences for collectivist behaviour over individualist behaviour would be attenuated, as individualist behaviour would, paradoxically, represent normative behaviour. These predictions were supported across two studies in which we manipulated norms of individualism and collectivism in an organizational role‐play. Furthermore, in Study 2, we found evidence for the role of group identification in moderating the effects of norms. The results are discussed with reference to social identity theory and cross‐cultural work on individualism and collectivism. Copyright © 2002 John Wiley & Sons, Ltd.     

Finding and losing your way in the world: neurocognitive studies on spatial memory

Spatial memory is vitally important for many daily life activities. Without it we would be continuously engaged in a laborious search for our keys or wallet, or we could not find our way back home gain. Given this clear ecological relevance, it has been argued that spatial memory would work to a large extent automatically, without conscious control and awareness. In this talk, examples will be given of studies from the Utrecht Psychological Laboratory on implicit and explicit aspects of wayfinding and object location memory in humans. Moreover, possible underlying neuranatomical correlates will be discussed, as revealed by neuropsychological studies. Finally, spatial memory research will be taken outside the laboratory by means of a study on how people lose things in real-life situations.     

Suicide as an interpersonal phenomenon: Dyadic methodological and statistical considerations in suicide research

Interpersonal risk and resilience factors are prominent in current conceptual models of suicide. A growing body of empirical evidence links suicidal thoughts and behaviors to a range of interpersonal phenomenon adding further support to the value of this line of inquiry. At present, research on interpersonal phenomenon focuses on assessing individuals' perceptions of interpersonal phenomenon, such as appraisals of burdensomeness, experienced loneliness, and thwarted belongingness. As this line of research continues to develop, we argue that it would be valuable to consider incorporating conceptual models of interpersonal phenomenon and corresponding methodological approaches from closely allied fields. After providing a brief overview of interpersonal models of suicide, we present an introduction to conceptual models of interpersonal phenomenon developed in relationship science, describe how these models can be applied to the study of interpersonal phenomenon in suicide research, and close with a guided tutorial on data collection and statistical analysis methods for testing hypotheses derived from these conceptual approaches. References for additional reading are provided, and the Appendix S1 provides simulated data sets and statistical code for the analyses in the tutorial section.     

Taking the easy way out: preference diversity, decision strategies, and decision refusal in groups

It has often been argued and found that preference diversity is beneficial for the quality of group decisions. However, this literature has neglected the fact that in many situations, it is also possible not to choose. Further, preference diversity can be based on attractions, aversions, or both. The authors argue that some types of preference diversity can lead to biased discussions and choice refusal (i.e., the group refuses to choose any of the available options). In a laboratory experiment, three different patterns were observed. When group members held different aversions before discussion, discussions were aversion driven and group members quickly agreed to refuse all alternatives. When each alternative had both a proponent and an adversary, discussions were longer and unbiased but still often led to refusal, which was accompanied by relatively low levels of outcome satisfaction. Only when preference diversity was based only on attractions did it lead to unbiased discussion, low prevalence of refusal, and high outcome satisfaction. Implications for group decision making are discussed.     

Learning your way around town: how virtual taxicab drivers learn to use both layout and landmark information

By having subjects drive a virtual taxicab through a computer-rendered town, we examined how landmark and layout information interact during spatial navigation. Subject-drivers searched for passengers, and then attempted to take the most efficient route to the requested destinations (one of several target stores). Experiment 1 demonstrated that subjects rapidly learn to find direct paths from random pickup locations to target stores. Experiment 2 varied the degree to which landmark and layout cues were preserved across two successively learned towns. When spatial layout was preserved, transfer was low if only target stores were altered, and high if both target stores and surrounding buildings were altered, even though in the latter case all local views were changed. This suggests that subjects can rapidly acquire a survey representation based on the spatial layout of the town and independent of local views, but that subjects will rely on local views when present, and are harmed when associations between previously learned landmarks are disrupted. We propose that spatial navigation reflects a hierarchical system in which either layout or landmark information is sufficient for orienting and wayfinding; however, when these types of cues conflict, landmarks are preferentially used.     

Bringing the world to your desk: Evolution of an international resource*

Traces the historical development of an international resource as it has evolved through seven versions from International Directory of Psychologists published as a book in 1958 to Psychology: IUPsyS Global Resource published as a CD‐ROM in 2001 to address the communication needs of the international psychology community in particular and the scholarly community in general.     

Using sonic branding in the retail environment — an easy and effective way to create consumer brand loyalty while enhancing the in‐store experience

Retail is no longer simply a point of purchase, it has now become part of a brand's communications strategy. As brands begin to explore the benefits of the retail environment they are mostly failing to utilise fully its ability to communicate with all the senses. Sonic branding has yet to make a significant impact on the retail environment and yet it is a powerful tool in the development of brand loyalty. As brands search for new ways of communicating with consumers both locally and globally, sonic branding will become a key tool in the creation of fully immersive brand experiences. Copyright © 2003 Henry Stewart Publications.     

Managing diversity: Using an equal opportunities audit to maximize career potential and opportunities in a uk bank

Abstract

The aim of this article is to describe an equal opportunities audit aimed at developing the career potential and opportunities of employees in a UK national bank. The major aims of the equal opportunities audit were: (1) to identify the position of employees in the bank by gender, race, disability, and age; (2) to identify the reasons (e.g. policy/structural barriers) and/or attitu-dinal barriers for job segregation and barriers to recruitment, training, and career progression (particularly into higher managerial grades); (3) to make appropriate recommendations for change to ensure equality of opportunity for all bank employees. A two-phased approach to data collection was utilized in this audit, namely the use of qualitative information in the form of in-house data/materials and group interview sessions, and quantitative data (statistically analysed) from the distribution of a large-scale sample (piloted), postal questionnaire (JV = 595, a 30.5% rate of response). The results were analysed in terms of issues associated with recruitment, promotion, training, working conditions, and the development of career opportunities. Differences were examined between personnel employed in seven UK locations and working within one of four job-grade bands. Gender, disability, and ethnicity differences in the responses were also investigated. The findings indicated that barriers to equality of opportunity and career development in the bank are likely to be localized to specific locations and impacting on those in certain grades. For these reasons, adoption of a blanket policy might not meet the needs of personnel seeking to maximize their career potential and opportunities in the bank.     

Using on-line and CD-ROM database archives as an adjunct to teaching survey research methods

Many undergraduate courses in research methods include a section on surveys. A number of practical issues can interfere with the design and implementation of student survey research and often preclude the completion of well-designed survey studies. This paper examines the use of on-line and CD-ROM databases as an alternative to student-designed survey instruments. Problems faced by student survey researchers can often be addressed by the use of such databases, rather than by “live” surveys. Data from experimental research collected on line are also available and downloadable for analysis, providing even greater flexibility for analysis. Advantages and problems of using archival databases in the teaching of survey research are considered. A brief list of databases that may be suitable for student research is provided, and a list of URLs, including where and how to obtain archives, is given.     

Paul Meehl and the evolution of statistical methods in psychology

In his landmark 1978 paper, Paul Meehl delineated, with remarkable clarity, some fundamental challenges facing soft psychology as it attempts to test theory with data. In the quarter century that followed, Meehl’s views stimulated much debate and progress, while continually evolving to keep pace with that progress. This paper pays homage to Meehl’s prescience, and traces the impact of his ideas on the recent shift of emphasis away from hypothesis testing and toward confidence interval estimates of effect size.     

Knowing your own mate value: sex-specific personality effects on the accuracy of expected mate choices

Knowing one's mate value (mate-value accuracy) is an important element in reproductive success. We investigated within- and between-sex differences in this ability in a real-life speed-dating event. A total of 190 men and 192 women filled out a personality questionnaire and participated in speed-dating sessions. Immediately after each date, participants recorded who they would choose as mates and who they expected would choose them. In line with evolutionarily informed hypotheses, results indicated that sociosexually unrestricted men and more agreeable women showed greater mate-value accuracy than sociosexually restricted men and less agreeable women, respectively. These results have important implications for understanding mating behavior and perhaps the origin of sex differences in personality.