Personality Disorders in Older Adult Inpatients with Chronic Mental Illness

It has been hypothesized that some types of personality disorders tend to remit with age whereas others may become more prominent. The present study determined the prevalence and nature of 13 personality disorders with a self-report inventory (Coolidge Axis II Inventory) in an older group of chronically mentally ill inpatients (N = 30, mean age = 63 years) and a younger group of similar patients (N = 30, mean age = 39 years). All patients met DSM-IV criteria for either Schizophrenia, Schizoaffective Disorder, Bipolar Disorder, or recurrent severe Major Depression with psychotic features. The prevalence rate of personality disorders was high for both groups: 58% for the older sample and 66% for the younger group. The younger group was more likely to be diagnosed Antisocial, Borderline, Passive-Aggressive, Sadistic, and Schizotypal, but the groups were not different in the rates of Obsessive-Compulsive Disorder. This study supports the hypothesis that some personality disorders remit with age. However, no evidence was found to suggest that other personality disorders become more prominent in older adult psychiatric populations. Suggestions for future research are offered.     

Speaker overestimation of communication effectiveness and fear of negative evaluation: Being realistic is unrealistic

Speakers systematically overestimate their communication effectiveness (Keysar & Henly, 2002). We argue that doing so is adaptive, reducing the risk of social anxiety and withdrawal from social situations. This hypothesis was tested by having speakers who scored low and high for fear of negative evaluation (FNE), a hallmark of social phobia, attempt to convey a specific meaning of ambiguous statements to a listener and then estimate their communication effectiveness. Low-FNE speakers consistently overestimated their effectiveness, expecting the listener to understand their intended meaning more often than listeners actually did. In contrast, high-FNE speakers’ estimates of communication effectiveness were consistent with the listener’s actual understanding. Signal detection analysis revealed that low- and high-FNE speakers were equally able to discriminate communication success from failure, but low-FNE speakers exhibited a stronger positive response bias. In conclusion, overestimating one’s communication effectiveness is adaptive, and accurate estimation is associated with dysfunction.     

What coping tells about personality

In this study, 123 participants (non‐psychology students) who responded to an interpersonal stress situation staged in the laboratory were judged by unacquainted observers in terms of the Big Five dimensions, intelligence and social attractiveness. Coping behaviour appeared to predict personality impressions in a way that mirrors the relations between personality and coping observed in previous research: Overall, higher levels of Extraversion (E), Agreeableness (A), Conscientiousness (C) and Openness to experience (O) (as well as intelligence and social attractiveness) were predicted by problem‐focussed behaviour and cognitive restructuring, whereas higher levels of Neuroticism (N) were predicted by withdrawal/passivity. The interpersonal impact of the particular coping reactions, as indicated by a positive personality impression, were largely inconsistent with their impact on affect following the stress induction. Copyright © 2009 John Wiley & Sons, Ltd.     

Auditory frequency generalization in the goldfish (Carassius auratus)

Auditory frequency generalization in the goldfish was studied at five points within the best hearing range through the use of classical respiratory conditioning. Each experimental group received single-stimulus conditioning sessions at one of five stimulus frequencies (100, 200, 400, 800, and 1600 Hz), and were subsequently tested for generalization at eight neighboring frequencies. All stimuli were presented 30 db above absolute threshold. Significant generalization decrements were found for all subjects. For the subjects conditioned in the range between 100 and 800 Hz, a nearly complete failure to generalize was found at one octave above and below the training frequency. The subjects conditioned at 1600 Hz produced relatively more flat gradients between 900 and 2000 Hz. The widths of the generalization gradients, expressed in Hz, increased as a power function of frequency with a slope greater than one.     

Health care utilization by low-income clients of a community clinic: an archival study

An archival study was done of 500 medical records from a community clinic serving a low income predominantly Hispanic area of Los Angeles. The data collected included demographic characteristics and presented symptoms or reasons for visit, as well as diagnosis and treatment. The greatest number of patient visits were made for family planning services. A large porportion of the patients who received initial family planning services failed to return to the clinic for follow ups or additional supplies. A total of 208 pregnancy tests were performed in 151 of the 500 cases sampled. Of these, 152 were positive. The most frequently stated reason for requesting pediatric services was for physical exams, accounting for 30% of the visits. It should be noted that the discontinuity of care and insufficient utilization of preventive care seen in these results deserve serious attention by medical clinic administrators. The rate of patients who do not return for family planning after the initial visit is worrisome. A greater effort to attract women to family planning services at the time they request pregnancy verification could reduce the need for abortion of unwanted pregnancy. The data also indicate that changes in the wording of certain questions commonly asked of clients may be needed. This study allowed service providers to obtain important information about their performance, their needs, and the future direction that their services might take. This type of analysis is relatively low in cost and can yield important benefits, espicially if done on a periodical base in a search for policy implications.     

Effects of cadence on the acquisition and expression of podokinetic after-rotation

Podokinetic after-rotation (PKAR) occurs as blindfolded subjects inadvertently rotate when asked to step in-place following stepping in-place on a rotating surface. We examined the effects of using different cadences on PKAR to test the following hypothesis: the position signal indicating the amount of rotation between the trunk and the feet during each stance period of treadmill stimulation is used to determine the amount of rotation between the trunk and the feet that is expressed during each stance period of PKAR. Based on this hypothesis, we predicted that use of different cadences during treadmill stimulation would alter PKAR velocity because use of different cadences alters stance duration, thus changing the amount of limb rotation under the trunk during each stance phase of stimulation. We also predicted that use of different cadences during PKAR would alter PKAR velocity because the more steps that are taken in a given time the higher the velocity of PKAR given that the same rotation between trunk and feet occurs during each stance period. Use of different cadences during treadmill stimulation did not alter PKAR velocity, suggesting that PKAR velocity is not determined based upon a position signal regarding the relative rotation between the trunk and feet during stimulation. Use of different cadences during PKAR resulted in lower and higher velocities, respectively, than using a medium cadence. Based on these results, we now hypothesize that the PK system likely uses a velocity or acceleration signal present during stimulation to recalibrate the amount of relative rotation between the trunk and limbs that is expressed with each step during PKAR.     

Spreading activation or spooky action at a distance?

How do preexisting connections among a word's associates facilitate its cued recall and recognition? A spreading-activation model assumes activation spreads to, among, and from a studied word's associates, and that its return is what strengthens its representation. An activation-at-a-distance model assumes strengthening is produced by the synchronous activation of the word's associates. The spread model predicts that connections among the studied word's associates will have a greater effect on memory when more of its associates return activation. The distance model predicts that total connections are important, not their direction. The results of cued recall experiments supported the distance model in showing that that connections among the associates facilitated recall regardless of the number of returning connections.