Alexithymia is not related to tolerance for cold pressor pain.

To test the hypothesis that higher scores on alexithymia are associated with reduced tolerance for cold pressor pain, 116 college undergraduates completed the Toronto Alexithymia Scale-20 of Bagby, Parker and Taylor and engaged in the cold pressor test. Their alexithymia scores were not associated with tolerance for cold pressor pain, suggesting that individuals scoring high on alexithymia do not show a general hypersensitivity to a cold stimulus.

Relation of rifle stock length and weight to military rifle marksmanship performance by men and women.

15 male and 13 female soldiers participated in a study to examine the effects of sex, rifle stock length 117.8 cm, 22.3 cm, and 26.

An assessment of the toxicity of phthalate esters to freshwater benthos. 2. Sediment exposures.

Seven phthalate esters were evaluated for their 10-d toxicity to the freshwater invertebrates Hyalella azteca and Chironomus tentans in sediment. The esters were diethyl phthalate (DEP), di-n-butyl phthalate (DBP), di-n-hexyl phthalate (DHP), di-(2-ethylhexyl) phthalate (DEHP), diisononyl phthalate (DINP), diisodecyl phthalate (DIDP), and a commercial mixture of C7, C9, and C11 isophthalate esters (711P). All seven esters were tested in a sediment containing 4.

An assessment of the toxicity of phthalate esters to freshwater benthos. 1. Aqueous exposures.

Tests were performed with the freshwater invertebrates Hyalella azteca, Chironomus tentans, and Lumbriculus variegatus to determine the acute toxicity of six phthalate esters, including dimethyl phthalate (DMP), diethyl phthalate (DEP), di-n-butyl phthalate (DBP), butylbenzyl phthalate (BBP), di-n-hexyl phthalate (DHP), and di-2-ethylhexyl phthalate (DEHP). It was possible to derive 10-d LC50 (lethal concentration for 50% of the population) values only for the four lower molecular weight esters (DMP, DEP, DBP, and BBP), for which toxicity increased with increasing octanol-water partition coefficient (Kow) and decreasing water solubility. The LC50 values for DMP, DEP, DBP, and BBP were 28.

Culture and self-presentation as predictors of shyness among Japanese and American female college students.

Self-presentation theories of shyness have been supported in North American samples but have not been evaluated cross-culturally. This study examined the relative influence of cultural and psychological variables on self-reported shyness among Japanese and American college students. 35 female Japanese-born and 47 United States-born Euro-American female students completed the Shyness Scale, Rosenberg Self-esteem Scale, Interpersonal Competence Questionnaire, Sensitivity to Rejection Scale, and Individualism-Collectivism Scale, and a demographic data sheet.

Differences in psychosocial experiences of employed, unemployed, and student samples of young adults.

The author conducted this cross-sectional study to assess the extent to which employed, unemployed, and student samples of young adults could be differentiated on the basis of psychosocial experiences. Forty-four employed, 41 unemployed, and 42 student volunteers completed measures of emotional distress, time structure, financial strain, skill use, task variety, social support, and demographic information. After the effects of educational and income differences were statistically controlled, results indicated that unemployed participants reported poorer functioning than employed and student respondents on most measures.

A QSAR evaluation of Ah receptor binding of halogenated aromatic xenobiotics.

Because of their widespread occurrence and substantial biological activity, halogenated aromatic hydrocarbons such as polychlorinated biphenyls (PCBs), polychlorinated dibenzofurans (PCDFs), and polychlorinated dibenzo-p-dioxins (PCDDs) comprise one of the more important classes of contaminants in the environment. Some chemicals in this class cause adverse biological effects after binding to an intracellular cytosolic protein called the aryl hydrocarbon receptor (AhR). Toxic responses such as thymic atrophy, weight loss, immunotoxicity, and acute lethality, as well as induction of cytochrome P4501A1, have been correlated with the relative affinity of PCBs, PCDFs, and PCDDs for the AhR.

Effects of Diflubenzuron on Benthic Macroinvertebrates in Littoral Enclosures.

Two applications of the insect growth regulator diflubenzuron were made to replicate littoral enclosures at nominal concentrations of 0.7, 2.5, 7.

Hepatic microsomal N-hydroxylation of aniline and 4-chloroaniline by rainbow trout (Onchorhyncus mykiss).

1. N-Hydroxylation of aniline and 4-chloroaniline was quantified in rainbow trout microsomal preparations using h.p.

Comparative toxicities of selected industrial chemicals to microorganisms and other aquatic organisms.

Biodegradation rates of 25 narcotic industrial chemicals were determined manometrically using resting cells prepared from preacclimated microorganisms. Chemical concentrations that would reduce maximum rates by 50% (BIC50) were estimated from rate inhibition data. Subsequently, the BIC50 and acute toxicities of chemicals to daphnids, barnacle larvae, copepods and fish (bleak, fathead minnow and golden orfe) were correlated.