How to measure diversity when you must

Racial/ethnic diversity has become an increasingly important variable in the social sciences. Research from multiple disciplines consistently demonstrates the tremendous impact of ethnic diversity on individuals and organizations. Investigators use a variety of measures, and their choices can affect the conclusions that can be drawn and limit the ability to compare and generalize results across studies effectively. The current article reviews 3 popular approaches to the measurement of diversity: the simplistic majority-minority approach and 2 multiple categories variants, the generalized variance and the lesser used entropy statistic. We discuss the properties of each approach and reject the majority-minority approach. We provide 5 examples using the generalized variance and entropy statistics and illustrate their versatility and flexibility. We urge investigators to adopt these multicategory measures and to use our discussion to determine which measure of diversity is most appropriate given the nature of one's data set and research question.     

How to measure working memory capacity in the change detection paradigm

Although the measurement of working memory capacity is crucial to understanding working memory and its interaction with other cognitive faculties, there are inconsistencies in the literature on how to measure capacity. We address the measurement in the change detection paradigm, popularized by Luck and Vogel (Nature, 390, 279-281, 1997). Two measures for this task-from Pashler (Perception & Psychophysics, 44, 369-378, 1988) and Cowan (The Behavioral and Brain Sciences, 24, 87-114, 2001), respectively-have been used interchangeably, even though they may yield qualitatively different conclusions. We show that the choice between these two measures is not arbitrary. Although they are motivated by the same underlying discrete-slots working memory model, each is applicable only to a specific task; the two are never interchangeable. In the course of deriving these measures, we discuss subtle but consequential flaws in the underlying discrete-slots model. These flaws motivate revision in the modal model and capacity measures.     

How scientific models can explain

Scientific models invariably involve some degree of idealization, abstraction, or fictionalization of their target system. Nonetheless, I argue that there are circumstances under which such false models can offer genuine scientific explanations. After reviewing three different proposals in the literature for how models can explain, I shall introduce a more general account of what I call model explanations, which specify the conditions under which models can be counted as explanatory. I shall illustrate this new framework by applying it to the case of Bohr’s model of the atom, and conclude by drawing some distinctions between phenomenological models, explanatory models, and fictional models.     

Financial interests of authors in scientific journals: A pilot study of 14 publications

Disclosure of financial interests in scientific research is the centerpiece of the new conflict of interest regulations issued by the U.S. Public Health Service and the National Science Foundation that became effective October 1, 1995. Several scientific journals have also established financial disclosure requirements for contributors. This paper measures the frequency of selected financial interests held among authors of certain types of scientific publications and assesses disclosure practices of authors. We examined 1105 university authors (first and last cited) from Massachusetts institutions whose 789 articles, published in 1992, appeared in 14 scientific and medical journals. Authors are said to “possess a financial interest” if they are listed as inventors in a patent or patent application closely related to their published work; serve on a scientific advisory board of a biotechnology company; or are officers, directors, or major shareholders (beneficial owner of 10% or more of stock issued) in a firm that has commercial interests related to their research. Applying the criteria to the reference population of journals and Massachusetts academic authors, we measured the following frequencies for lead authors: .20 for serving on a scientific advisory board; .07 for being an officer, director, or major shareholder in a biotechnology firm; and .22 for being listed as an inventor in a related patent or patent application. The joint frequency of articles in the journals reviewed with a lead author that meets one of the three conditions is .34. Implications of these results for the new conflict of interest guidelines and disclosure policies are discussed.     

自传体记忆的开端:最早记忆的诱发与评估

童年期遗忘指人们无法回忆起生命最初几年的事情。最早记忆是童年期遗忘开始消退和自传体记忆发生的标志,诸多研究表明成人的最早记忆一般介于3~4岁间,儿童有更早的最早记忆。最早记忆的诱发方法,包括单一最早记忆法、线索词法、穷举法和生命全程法;最早记忆的评估方法,包括自陈式的记忆现象学问卷测量,以及针对记忆叙述内容的编码分析。未来研究要加强纵向研究,追踪最早记忆随年龄而发生的变化;展开特殊人群的研究;完善测量工具;探究早期记忆保持和遗忘的机制。     

How to measure post-error slowing: A confound and a simple solution

In many response time tasks, people slow down after they make an error. This phenomenon of post-error slowing (PES) is thought to reflect an increase in response caution, that is, a heightening of response thresholds in order to increase the probability of a correct response at the expense of response speed. In many empirical studies, PES is quantified as the difference in response time (RT) between post-error trials and post-correct trials. Here we demonstrate that this standard measurement method is prone to contamination by global fluctuations in performance over the course of an experiment. Diffusion model simulations show how global fluctuations in performance can cause either spurious detection of PES or masking of PES. Both confounds are highly undesirable and can be eliminated by a simple solution: quantify PES as the difference in RT between post-error trials and the associated pre-error trials. Experimental data are used as an empirical illustration.     

Living together, feeding apart: How to measure individual food consumption in social house mice

In many studies with animals kept in groups, scientists need information about each individual’s food access without disturbance or separation of the animals. We developed an automatic feeding device that allows measurement of individual food consumption and experimental manipulation of individual food availability in small social mammals, such as house mice. The feeding device is based on radio frequency identification that triggers access to a motor-driven metal arm filled with food pellets and is mediated with the help of subcutaneously implanted transponders.     

How attribution influences aggression: Answers to an old question by using an implicit measure of anger

The present study investigated how aggressive reactions to frustration are influenced by attributional processes. In particular, we examined how the information that another person did not intend a frustration affects anger and aggression. Previous research was inconclusive if attribution to unintentionality decreases anger and aggressive impulses or if it increases the control of aggressive impulses resulting in a selective decrease of aggressive reactions that are controllable. To test these assumptions, two thirds of participants were frustrated by negative evaluations that were paired with aversive sounds from an ostensible team partner. The remaining participants received positive evaluations that were paired with pleasant sounds. Then, half of the frustrated participants obtained a message suggesting that their partner had confused the response scale and had actually meant to deliver an opposite evaluation. This apologizing information was effective in decreasing subsequent aggressive behavior but not in reducing anger as assessed by an implicit measure. This finding is in line with the notion that attribution to unintentionality leads to control of aggressive impulses. We conclude that such attributions influence aggressive behavior mainly via reflective pathways, while impulsive processes remain largely unaffected.     

Principles and criteria used by the National Evaluation Committee of Research Activity (CNEAI-Spain) for the assessment of scientific publications: 1989-2009

Study of the origins, philosophy and history of the criteria used to assess research activities in Spain by the CNEAI. The assessment criteria and quality evidence of publications is discussed. Results are presented on the temporal development of the criteria used, grouped by publication type (articles and books) and fields of knowledge. Between 1989-1996, assessment was based on the definition and goals set by the Spanish scientific framework and on general criteria. Between 1996-2004, the formulation of indicators began to be almost exclusively based on Journal Citation Reports (JCR). Success rates up to 2004 indicate that the evaluation criteria and publishing behaviour matched the "hard sciences", but not the Social Sciences and Economics. In 2005, the criteria used were further developed and reoriented with an eye to softening the preceding JCR-centrism by taking into consideration other databases and defining the quality criteria to be met by journals, books and conferences not included in JCR. Correspondingly, the success rates for 2007 indicate a dramatic recovery in Economics. In the last 4 years, Humanities and Social Sciences have consolidated the further opening of the criteria used with the addition of new benchmarks and the full integration of books.     

Responding to allegations of scientific misconduct

Institutions in France are not yet well prepared to respond to allegations of scientific misconduct. Following a serious allegation in late 1997. INSERM,* the primary organization for medical and health-related research in France, began to reflect on this subject, aided by scientists and jurists. The conclusions have resulted in establishing a procedure to be followed in cases of alleged misconduct, and also in reinforcing the application of good laboratory practices within each laboratory. Guidelines for authorship practices and scientific assessment must also be considered. Even though each institution must remain responsible for responding to allegations of scientific misconduct within its doors, INSERM would like to see national, European, and international co-ordination about the methods of such response. Institut National de la Santé et de la Recherche Médicale (eng. French National Medical Research Institute) is known as INSERM. An earlier version of this paper was presented at a symposium, Scientific Misconduct: An International Perspective, organised by The Medical University of Warsaw, 16 November, 1998.     

A scale to measure wisdom

Abstract

The present study's purpose was to refine and test a newly developed self‐report instrument to assess wisdom. The empirical study was based on a sample of undergraduates recruited at two universities and Buddhists recruited at two temples. This sample filled out 23 items of the wisdom scale and, in addition, several other psychological self‐report scales. Items from the wisdom scale were factor analyzed and the following seven factors emerged: Balance/Harmony, Flow, Spirituality, Warmth, Care for Environment, Appreciation, and Intelligence. These dimensions were statistically significantly related to various outcome measures such as depression, perceived stress, and optimism scales. Statistically significant differences were found between various religious and socio‐demographic groups on the different factor scores. This study suggests that wisdom is a multidimensional and complex construct worthy of scientific investigation.