The good-subject effect: investigating participant demand characteristics

Although researchers are often concerned with the presence of participant demand, few have directly examined effects of demand on participant behavior. Before beginning the present study, a confederate informed participants (N = 100) of the study's purported hypothesis. Participants then performed a laboratory task designed to evaluate the extent to which they would respond in ways that may confirm or disconfirm the hypothesis of the study. The authors found that participants tended to respond in ways that confirmed the hypothesis, yet this tendency depended on attitudes toward the experiment or experimenter and other individual differences. In addition, results suggested that suspicion probes may be ineffective in measuring participants' previous knowledge and suspicion. Findings indicate the need for more research and consideration of demand in the design of studies and analysis of data.     

The effects of wording on the understanding and use of uncertainty information in a threshold forecasting decision

Many believe that information about small chances of severe weather would be useful to the general public for precautionary action. What is the best way to explain this kind of information to a non‐expert audience? The studies reported here investigated effects of framing (negative vs. positive), format (frequency vs. probability), likelihood (low vs. high) and compatibility (task‐match) on interpretation of verbal expressions of forecast uncertainty and on subsequent forecasting decisions. The crucial factor was the match between the verbal expression and the overall task goal. Errors increased when there was a mismatch between the expression (e.g. winds less than 20 knots) and the task (e.g. post an advisory when winds will exceed 20 knots). However, framing and format had little impact. We conclude that consideration of user expectations arising from the overall task goal is crucial in explaining uncertainty information to a naïve audience. Global expectations overpower other potential effects. Copyright © 2008 John Wiley & Sons, Ltd.     

Clinical Audit and Reform of the UK Research Ethics Review System

There is an international consensus that medical research involving humans should only be undertaken in accordance with ethical principles. Paradoxically though, there is no consensus over the kinds of activities that constitute research and should be subject to review. In the UK and elsewhere, research requiring review is distinguished from clinical audit. Unfortunately the two activities are not always easy to differentiate from one another. Moreover, as the volume of audit increases and becomes more formal in response to the demand for evidence-based practice in medicine, the overlap between research and audit grows more acute. Arguably, similar ethical standards and systems for ensuring that those standards are met should be applied regardless of whether or not a project is classified as research or audit. At a time when the research ethics review system in the UK is undergoing significant reform it is important that the opportunity is not missed to address the longstanding research-audit problem. We discuss suggestions for further reform that addresses this issue.     

The development of procedures for the measurement of vocal loudness behaviors

Vocal loudness productions of five similar groups of speakers were analyzed. The groups differed significantly in comfortable loudness, in multiples (2x, 4x, and 0.5x) of comfortable loudness, and in ranges (4x-0.5x) of comfortable loudness. Interclass reliabilities for sets of measures were high and highly significant. Implications for the specification of vocal loudness behaviors are discussed.     

Professional responsibility: The role of the engineer in society

We argue that the practice of engineering does not exist outside the domain of societal interests. That is, the practice of engineering has an inherent (and unavoidable) impact on society. Engineering is based upon that relationship with society (inter alia). An engineer’s conduct (as captured in professional codes of conduct) toward other engineers, toward employers, toward clients, and toward the public is an essential part of the life of a professional engineer, yet the education process and professional societies pay inadequate attention to the area. If one adopts Skooglund’s definition of professional ethics^I (how we agree to relate to one another), then the codes of professional conduct lay out a road map for professional relationships. As professionals, engineers need to internalize their codes and to realize that they have a personal stake in the application of codes as well as the process of developing the codes. Yet, most engineers view professional codes as static statements developed by “others” with little (or no) input from the individual engineer. Complicating the problem, questions of professionalism (such as ethics) are frequently viewed as topics outside the normal realm of engineering analysis and design. In reality, professional responsibility is an integral part of the engineering process.     

Dimensions of deception in personality assessment: the example of the MMPI-2

The topic of deception in personality assessment is discussed along a number of dimensions relevant to clinical practice. The dimensions described are consistency versus accuracy of item endorsement, simulation versus dissimulation, genetic versus specific deception, crude versus sophisticated deception, intentional versus nonintentional deception, self-deception versus impression management, and selectivity versus inclusiveness, as these may be encountered using the revised version of the Minnesota Multiphasic Personality Inventory. The emphasis is placed on deceptive strategies as operations as distinct from the traditional categories of response style such as social desirability. Directions for future research are indicated.     

The Shaping of Family Therapy Education: An Update

The preparation and credentialing of marital and family therapists in the United States and Canada continues to be significantly affected by the role of accreditation in MFT graduate education. This report on a study of Commission on Accreditation for Marriage and Family Therapy Education accredited degree programs and non-accredited programs shows some significant differences between the two paths to preparation and credentialing. Accredited programs tend to have more faculty, lower faculty-student ratios, more Approved Supervisors, more financial aid, more programs requiring practica and internships, and more emphasis on professional identification with marital and family therapy. Nonaccredited programs provide more emphasis on psychopathology, psychodiagnostic testing, and cognitive behavioral therapy.     

Detectability as a function of spatial location: effects of selective attention

In a series of previous reports we have described differences in detectability of a target in a background of nontarget patterns as a function of its spatial location. These differences, referred to as a "detectability gradient," have been attributed to target detection accomplished by a serial processing mechanism--a scan. The mathematical model of such a mechanism, developed in the previous report, is equally applicable to a series of attentional shifts or to a perceptual, i.e., a preattentive, mechanism. The present experiments were designed to test the hypothesis that this scan is attentional in nature. The results provide additional evidence for the scanning hypothesis but do not support the view that this scan represents a series of attentional shifts.