Application of the Theory of Signal Detectability to Kinesthetic Discrimination Tasks

The psychophysical methods of the theory of signal detectability were applied to the measurement of kinesthetic recognition sensitivity. Subjects (n = 12) were tested on a kinesthetic discrimination apparatus, and were randomly assigned to one of four treatment conditions. Each subject operated under five response criteria which were imposed through a priori probabilities of high and low kinesthetic stimuli. The fundamental assumptions of the theory of signal detectability were tested and the basic premises of normality and equality of variance observed in most cases. A subproblem investigated the relationship between kinesthetic recognition sensitivity and the two independent variables of direction and extent of forearm movement, but no relationship was observed. This study was conducted at Kansas State University under the direction of Richard H. Cox with technical assistance from Harold L. Hawkins. The study was funded by a Faculty Research Grant awarded by Kansas State University.     

Properties of three-dimensional bubbles of constant mean curvature

Foam bubbles of constant mean curvature with a number of faces between 3 and 32 have been computer generated. The surface area per unit volume is only weakly dependent upon the number of faces, which allows an approximate equation for the energy of a three-dimensional foam to be derived. A further relation between the rate of change in the volume of a bubble due to gas diffusion and its number of faces is compared with existing theory.     

Intrinsic religiosity protects believers from the existential fear of a human Jesus

ABSTRACT

The present study examined the role of internalised religious beliefs in defending against existential concerns aroused from a creaturely Jesus. Prior work has found that biologically human traits (e.g., vomiting, sweating, etc.) can increase death concerns when applied to both humans and a god. Intrinsic beliefs, however, have been shown to reduce mortality awareness. In the current study, religious participants were primed with thoughts of either a human or neutral Jesus followed by a single item measure about fear of death. A moderated regression analysis found that whereas high intrinsic individuals were buffered from existential concerns, low intrinsic individuals experienced a greater fear of death when primed with a human Jesus. These results replicate prior work within terror management theory and the psychology of religion suggesting that internalised beliefs serve a protective function against existential anxieties.     

“There is Nothing Good About this Work:” Identity and Unhappiness Among Nicaraguan Female Sex Workers

In a study of life satisfaction in Nicaragua, Cox (2012) found that female sex workers had dramatically low subjective well-being (SWB) relative to other marginalized groups in Nicaragua. Moreover, the SWB of these female sex workers was possibly the lowest recorded in the life satisfaction literature. A novel theory linking life satisfaction with life stories is proposed, and a method not heretofore used in SWB research is employed, the life story interview, in order to better understand the dramatic unhappiness of this sample. Seeing life satisfaction as an identity invoking process, the sample’s dramatically low life satisfaction judgments are framed within the larger context of narrative identity. Thematic analysis of the stories revealed a prototypical narrative arc: early family conflict, departure from home, a series of unsuccessful romantic relationships, birth of multiple children, dire economic crises, entry into sex work, and hope for a future exit from sex work. The life stories of these participants provided an identity and life course context to understand the dramatic unhappiness of this sample.     

Folkbiology of freshwater fish

Cross-cultural comparisons of categorization often confound cultural factors with expertise. This paper reports four experiments on the conceptual behavior of Native American and majority-culture fish experts. The two groups live in the same general area and engage in essentially the same set of fishing-related behaviors. Nonetheless, cultural differences were consistently observed. Majority-culture fish experts tended to sort fish into taxonomic and goal-related categories. They also showed an influence of goals on probes of ecological relations, tending to answer in terms of relations involving adult fish. Native American fish experts, in contrast, were more likely to sort ecologically. They were also more likely to see positive and reciprocal ecological relations, tending to answer in terms of relations involving the full life cycle of fish. Further experiments support the view that the cultural differences do not reflect different knowledge bases but rather differences in the organization and accessibility of knowledge. At a minimum the results suggest that similar activities within a well-structured domain do not necessarily lead to common conceptualizations.     

Reconnecting interpretation to reasoning through individual differences

Computational theories of mind assume that participants interpret information and then reason from those interpretations. Research on interpretation in deductive reasoning has claimed to show that subjects' interpretation of single syllogistic premises in an “immediate inference” task is radically different from their interpretation of pairs of the same premises in syllogistic reasoning tasks (Newstead, 1989, 1995; Roberts, Newstead, & Griggs, 2001). Narrow appeal to particular Gricean implicatures in this work fails to bridge the gap. Grice's theory taken as a broad framework for credulous discourse processing in which participants construct speakers' “intended models” of discourses can reconcile these results, purchasing continuity of interpretation through variety of logical treatments. We present exploratory experimental data on immediate inference and subsequent syllogistic reasoning. Systematic patterns of interpretation driven by two factors (whether the subject's model of the discourse is credulous, and their degree of reliance on information packaging) are shown to transcend particular quantifier inferences and to drive systematic differences in subjects' subsequent syllogistic reasoning. We conclude that most participants do not understand deductive tasks as experimenters intend, and just as there is no single logical model of reasoning, so there is no reason to expect a single “fundamental human reasoning mechanism”.     

Semantic distance effects on object and action naming

Graded interference effects were tested in a naming task, in parallel for objects and actions. Participants named either object or action pictures presented in the context of other pictures (blocks) that were either semantically very similar, or somewhat semantically similar or semantically dissimilar. We found that naming latencies for both object and action words were modulated by the semantic similarity between the exemplars in each block, providing evidence in both domains of graded semantic effects.     

Posthypnotic amnesia for a first romantic relationship: Forgetting the entire relationship versus forgetting selected events

This experiment investigated the impact of suggestion focus on posthypnotic amnesia (PHA) for memories of a first romantic relationship. During hypnosis, high and low hypnotisable participants recalled specific memories from this period in response to 10 cue phrases (Elicitation). They then received a PHA suggestion that targeted either the entire period or specific memories from that period. Participants' explicit memory was indexed by cued recall after PHA was administered (memories recalled to "old" and "new" cues; Recall 1) and after it was cancelled (Recall 2). A social judgement task indexed dissociations between implicit and explicit memory. PHA had the greatest impact on highs', but not lows', memory performance (in terms of memories recalled to old cues, recall latency, and qualitative memory ratings) when the suggestion targeted the entire period rather than specific events. We discuss these findings in terms of the parameters of PHA's influence on memory, its value for exploring the nature and structure of autobiographical memory, and its utility as a laboratory analogue of functional amnesia.     

Patient-targeted googling by psychological therapists: A narrative review of the literature and ethical implications

Background

“Patient-Targeted Googling” (PTG) refers to a healthcare professional using the Internet to discover information about a patient. The present review explores PTG by psychological therapists. The review focused on the prevalence of PTG, how often consent is sought from the patient, and the motivations for and consequences of PTG.

Method

A narrative literature review of published PTG studies was undertaken. Potentially eligible studies were identified by searching PsycINFO, PsycARTICLES, Psychology and Behavioural Sciences Collection, and MEDLINE. Results were screened for suitability for inclusion in the sample (n = 9). All studies were appraised for quality using a structured tool developed for this review.

Results

PTG prevalence rates ranged from 20% to 98%, with rates of non-consent ranging from 60% to 84%. Motivations for PTG included curiosity, to gather new information and to verify existing information. Consequences of PTG included enhancing the therapist's sense of safety and causing harm to the therapeutic relationship.

Discussion

Current literature on PTG is limited and focussed largely in the United States. This review revealed no published PTG studies including UK-based psychological therapists, as well as issues in defining and operationalising PTG. Further research is needed to understand the prevalence of PTG by UK-based psychological therapists, as well as the motivations behind, and consequences of, PTG. This evidence base will inform the development of PTG professional guidelines and training, neither of which currently exist for therapists practising in the UK. Both would be timely given the increasing move of the therapeutic frame to the online environment due to the COVID-19 pandemic.     

Video self-portraits: a novel approach to group psychotherapy with young adults

A group therapy model was formulated for exploring the intersubjective processes of adolescents and young adults whose group bonds had been fragmented by their severe emotional illnesses. The model involved having adolescents and young adults who were psychiatric inpatients make video self-portraits; that is, videotapes which focused on various aspects of their emotional pathology. These tapes were then presented before a larger group of nine patients for discussion. The video team method is shown to aid in self-disclosure and facilitate the working through of severe emotional conflicts in this age group. It is an especially useful method with more severely disturbed patients for whom narcissistic self pathology is a prominent feature.