The effect of cellular telephone conversation and music listening on response time in braking

Driver distraction contributes to vehicle accidents, with estimates as high as one-half of crashes being distraction-related. The purpose of this experiment was to explore potential distractions by testing the effects of cellular telephone conversation and music listening on response time and its subcomponents of reaction time (RT) and movement time (MT) in a simulated braking task. Participants (N = 27) sat at a simulated driving station and released the accelerator and depressed the brake pedal as quickly as possible following activation of a simulated brake lamp. The braking task was performed under each of six conditions including: (a) the control (braking task only); (b) music playing at 66 dBA; (c) music playing at 78 dBA; (d) cellular telephone conversation; (e) cellular telephone conversation and music at 66 dBA; and (f) cellular telephone conversation and music at 78 dBA. Cellular telephone conversation slowed response time, yet music had no effect on response time. While the RT results generally mirrored those of response time (i.e., RT was also slowed by the telephone conversation), interestingly, MT was actually faster when the cellular telephone conversation was present compared to when it was not. Participants appear to have anticipated slower RT in the presence of the cellular telephone conversation, and attempted to compensate by executing a more rapid movement to the brake pedal.     

Decisions to Seek Healthcare Based on Family Health History Among Urban Appalachian Women

Family health history (FHH) is a valuable health promotion tool that can be used to assess disease risk and make lifestyle and screening recommendations. However, few FHH resources exist for medically underserved populations such as the urban Appalachian community in Cincinnati Ohio. Women of Appalachian heritage with less than a college education who did and did not participate in a prior FHH education session were interviewed by phone in a semi-structured format. Interviewees were asked to discuss their understanding of FHH and the role FHH played in seeking (or not seeking) medical care. Analysis of their discussion identified four overarching themes as well as a model identifying conditions that facilitated or impeded the choice to seek medical care based on FHH. Findings from this study may be used to develop targeted FHH educational interventions in the urban Appalachian and other communities.     

Parental Experiences of Having a Child with Obsessive-Compulsive Disorder: Associations with Clinical Characteristics and Caregiver Adjustment

We examined parental experience of having a child with obsessive-compulsive disorder (OCD) in 62 parent–child dyads. Youth with a primary diagnosis of OCD and their parent(s) were administered the CY-BOCS jointly by a trained clinician. Parents completed several measures about their child’s OCD-related impairment and accommodation, emotional and behavioral functioning, parental distress, caregiver stress, and parental experiences of having a child with OCD. Results indicated that parents of children with OCD are considerably distressed about their child’s condition. As expected, negative parental experiences (e.g., anxiety about child’s condition, uncertainty about their future) were directly related to OCD symptom severity and impairment, as well as child internalizing and externalizing problems, family accommodation of symptoms, and caregiver strain. The presence of emotional resources was negatively related to most outcomes, although some of these relationships did not achieve statistical significance. The presence of internalizing symptoms mediated the relationship between parental experiences and parental distress. Given these findings, addressing parental experiences as part of a family based cognitive-behavioral treatment program for pediatric OCD may help reduce parental distress and improve patient prognosis.     

The effects of phencyclidine and chlordiazepoxide on target biting of confined male mice

Target-biting of confined mice increases following delivery of tail shock and decreases during a tone that precedes the shock. Both phencyclidine and chlordiazepoxide reduced biting (dose dependently) following shock and had no effect on biting during the tone. These observations are discussed in reference to previous reports, which infer that the effects of phencyclidine and chlordiazepoxide on aggression might depend upon the baseline rate of the behavior.     

The Debate on Structured Debate: Toward a Unified Theory

Although structured debate has been studied extensively over the past 20 years, little theoretical understanding of the phenomenon exists. By examining the literature, this paper builds a theoretical framework for understanding structured debate by raising and exploring several key, but previously implicit theoretical issues. The paper also argues that process modeling of structured debate in group settings can afford theoretical understanding, and offers several such models and coding schemes. The implications of structured debate in real-world settings are also considered.     

Measures of Ethnicity‐Related Stress: Psychometric Properties,Ethnic Group Differences,and Associations With Well‐Being1

This study introduces new measures of ethnicity‐related stress and a newly adapted measure of ethnic identity. Ethnicity‐related stressors assessed in this study were perceived discrimination, stereotype confirmation concern, and own‐group conformity pressure. Ethnic identity refers to the subjective sense of ethnic group membership and, following Luhtanen and Crocker (1992), was assessed as public regard, identity centrality, and private feelings. Data for 333 undergraduates from diverse ethnic groups indicated that the measures are psychometrically sound. Ethnic group differences for mean scores demonstrated the measures’ known‐groups validity. Cross‐sectional analyses indicated that ethnicity‐related stress and identity constructs captured by the instruments are related to measures of psychological and physical well‐being. The new measures may be useful in the investigation of psychological aspects of ethnicity and their adaptive consequences.     

Is Skepticism about Self-Knowledge Coherent?

In previous work I argued that skepticism about the compatibility ofanti-individualism with self-knowledge is incoherent. Anthony Brueckner isnot convinced by my argument, for reasons he has recently explained inprint. One premise in Brueckner's reasoning is that a person'sself-knowledge is confined to what she can derive solely from herfirst-person experiences of using her sentences. I argue that Brueckner'sacceptance of this premise undermines another part of his reasoning – hisattempt to justify his claims about what thoughts our sincere utterances ofcertain sentences would express in various possible worlds. I describe aweird possible world in which a person who uses Brueckner's reasoning endsup with false beliefs about what thoughts her sincere utterances of certainsentences would express in various possible worlds. I recommend that wereject Brueckner's problematic conception of self-knowledge, and adopt onethat better fits the way we actually ascribe self-knowledge.     

Spoken Language Outcomes after Hemispherectomy: Factoring in Etiology

We analyzed postsurgery linguistic outcomes of 43 hemispherectomy patients operated on at UCLA. We rated spoken language (Spoken Language Rank, SLR) on a scale from 0 (no language) to 6 (mature grammar) and examined the effects of side of resection/damage, age at surgery/seizure onset, seizure control postsurgery, and etiology on language development. Etiology was defined as developmental (cortical dysplasia and prenatal stroke) and acquired pathology (Rasmussen's encephalitis and postnatal stroke). We found that clinical variables were predictive of language outcomes only when they were considered within distinct etiology groups. Specifically, children with developmental etiologies had lower SLRs than those with acquired pathologies (p =.0006); age factors correlated positively with higher SLRs only for children with acquired etiologies (p =.0006); right-sided resections led to higher SLRs only for the acquired group (p =.0008); and postsurgery seizure control correlated positively with SLR only for those with developmental etiologies (p =.0047). We argue that the variables considered are not independent predictors of spoken language outcome posthemispherectomy but should be viewed instead as characteristics of etiology.