Anchoring effects in the judgment of confidence: Semantic or numeric priming?

Over the last decade, researchers have debated whether anchoring effects are the result of semantic or numeric priming. The present study tested both hypotheses. In four experiments involving a sensory detection task, participants first made a relative confidence judgment by deciding whether they were more or less confident than an anchor value in the correctness of their decision. Subsequently, they expressed an absolute level of confidence. In two of these experiments, the relative confidence anchor values represented the midpoints between the absolute confidence scale values, which were either explicitly numeric or semantic, nonnumeric representations of magnitude. In two other experiments, the anchor values were drawn from a scale modally different from that used to express the absolute confidence (i.e., nonnumeric and numeric, respectively, or vice versa). Regardless of the nature of the anchors, the mean confidence ratings revealed anchoring effects only when the relative and absolute confidence values were drawn from identical scales. Together, the results of these four experiments limit the conditions under which both numeric and semantic priming would be expected to lead to anchoring effects.     

Why Do We Need to Know What the Public Thinks about Nanotechnology?

Public debate on nanotechnology is a large topic within governments, research agencies, industry and non-government organisations. But depending who you talk to the perception of what the public thinks about nanotechnology can be very varied. To define coherent policy and to invest in research and development that aligns with public preferences, needs more than just perceptions of public perceptions. Public attitude studies are vital in understanding what the public really think, but they need to go further than simplistic polling and should examine factors such as changes over time, drivers of attitude change, different attitudes to different applications and be supported by qualitative data. This paper summarises the findings of a three year tracking study of public attitudes towards nanotechnology, highlighting both concerns and aspirations for nanotechnology and discusses the impacts of that data on public engagement programs.     

Comfortably Numb: Desensitizing Effects of Violent Media on Helping Others

ABSTRACT— Two studies tested the hypothesis that exposure to violent media reduces aid offered to people in pain. In Study 1, participants played a violent or nonviolent video game for 20 min. After game play, while completing a lengthy questionnaire, they heard a loud fight, in which one person was injured, outside the lab. Participants who played violent games took longer to help the injured victim, rated the fight as less serious, and were less likely to "hear" the fight in comparison to participants who played nonviolent games. In Study 2, violent- and nonviolent-movie attendees witnessed a young woman with an injured ankle struggle to pick up her crutches outside the theater either before or after the movie. Participants who had just watched a violent movie took longer to help than participants in the other three conditions. The findings from both studies suggest that violent media make people numb to the pain and suffering of others.     

Competency‐based Models of Supervision: Principles and Applications,Promises and Challenges

Major changes initiated by the Psychology Board of Australia (the Board) and by professional bodies both nationally and internationally have placed professional supervision in the spotlight for the practising psychologist and supervisor. Further, within the context of a growing impetus towards competency‐based pedagogies for professional training across disciplines, a recent Board document has indicated that supervisor training must adhere to a competency‐based model within a best‐practice supervision framework (Psychology Board of Australia). For the practising psychologist, the recent recommendation closely follows other initiatives including the introduction of mandatory peer consultation and supervisor accreditation. The current article seeks to clarify for the Australian psychologist the characteristics of competency‐based supervision models for training and supervision, and to unpack the many implications for professional practice. The article outlines the features that distinguish competency models from other supervision models, explains the rationale for and the merits that competency‐driven pedagogies promise, and discusses the challenges these changes will bring to supervision theory and practice.     

Variable-interval reinforcement schedule value influences responding following REM sleep deprivation

The effects of rapid-eye movement sleep deprivation (REMSD) in rats were studied in relation to variable-interval (VI) reinforcement schedule value. Initially, lever pressing was maintained on a VI 30-s schedule of food pellet delivery. After a baseline was established, rats were repeatedly exposed to 96 hr of REMSD and control conditions of an equivalent duration. Responding decreased following REMSD but not after exposure to control conditions. Lever pressing was then maintained on a VI 15-s schedule of food pellet delivery and exposure to the REMSD and control conditions was repeated. Under this condition following repeated REMSD exposures, rates of lever pressing became similar to baseline responding. A VI 30-s schedule of food pellet delivery was then reinstated and REMSD and control conditions were repeated. Lever pressing following exposure to the REMSD condition decreased for 3 of 4 rats. Results suggest that VI schedule value influences the effects of REMSD on responding.     

Asymmetrical sample training produces asymmetrical retention functions in feature-present/feature-absent matching in pigeons

Pigeons were trained in a matching task in which samples involved presentation of a white line on a green background (feature-present) or on an otherwise dark key (feature-absent). After asymmetrical training in which one group was initially trained with the feature-present sample and another was initially trained with the feature-absent sample, marked retention asymmetries were obtained. In both groups, accuracy dropped precipitously on trials involving the initially trained sample and remained high on trials involving the sample introduced second in training. It was concluded that asymmetrical training encouraged a single-code/default strategy in which only the sample trained initially was coded. Consistent with this conclusion, changing attributes of either sample reduced accuracy to a greater extent in pigeons initially trained with that sample than in pigeons for which that sample was introduced second in training.     

Ethical issues in therapy: therapist self-disclosure of sexual feelings

Although therapist sexual attraction to clients is common, and therapist self-disclosure is an often-used intervention, therapist self-disclosure of sexual feelings to clients is an understudied phenomenon. In this article, I critically review the small base of literature on therapist self-disclosure of sexual feelings, including information on prevalence rates, empirical research, and case studies. By incorporating these findings with information from relevant sections of the American Psychological Association (2002) Ethics Code, my intent is to evaluate different aspects of therapist self-disclosure of sexual feelings and arrive at conclusions regarding therapists' use of these disclosures. It appears that direct, explicit disclosure of sexual feelings can run the risk of harming clients and may therefore be unethical. Therefore, the use of this technique is discouraged. I discuss the issue of using less explicit interventions.     

Facts, interpretations, and explanations: a review of Evelyn Fox Keller's Making sense of life

The job of a researcher is to explain the phenomenon that he or she is seeking to understand. To do this requires the accumulation of facts. These facts are then interpreted to arrive at explanations. However, individual researchers often interpret facts in different ways and arrive at disparate explanations. In her book, Making Sense of Life, Evelyn Fox Keller (2002) outlines various approaches used by developmental biologists to understand the animate systems we call life. In this review, I note several parallels between biology and behavior analysis in how facts are discovered, what is an acceptable interpretation of data, and how explanations are arrived at.