Minimum lung function for breath alcohol testing using the Lion Alcolmeter SD-400.

The aim of this study was to determine the minimum lung function required by an individual to complete a breath alcohol test successfully using a Lion Alcolmeter SD-400. A total of 331 subjects routinely referred to a busy clinical respiratory function laboratory for assessment of their lung function were tested. A total of 52 (15.7%) of these subjects were unable to provide an adequate sample after two attempts. The majority of the group (86.5%) were female. There was considerable overlap of the minimum lung function parameters between those subjects who were unsuccessful at all attempts and those who were successful. The failure rate of the subjects using the Lion Alcolmeter SD-400 was approximately 50% of that found in a previous study of the Lion SD-2.     

Timing of first sexual intercourse: the role of social control,social learning,and problem behavior

Prior research has pointed to several distinct processes that may affect the timing of first intercourse among adolescents. In the present study, the role of six hypothesized processes was assessed in a sample of 289 rural adolescent boys and girls. Results support the importance of family socialization and problem-behavior for both sexes, the role of biological factors for boys, and the role of social control processes for girls. Two other hypothesized influences—social class and poor psychosocial adjustment—were not supported in either gender. These results indicate that multiple processes influence the timing of first intercourse; thus, they underscore the need for eclectic predictive models that incorporate the multiplicity of influences.Received Ph.D. in Human Development from the University of Chicago. Current research interests include adolescent psychosocial development and risk behaviors.Received Ph.D. in Human Development and Family Studies from the Pennsylvania State University. Current research interests include adolescent sexuality and health-related behaviors.Received Ph.D. in Health Education from The Pennsylvania State University. Current research interests include adolescent health.Received Ph.D. in Education from The Pennsylvania State University. Current interests include adolescent substance abuse and pregnancy, as well as community health interventions.     

The Role of Deliberative Decision Making,Parenting, and Friends in Adolescent Risk Behaviors

Adolescents may engage in risk behaviors that jeopardize their futures. Although adolescent risk-taking has long been attributed to faulty decision making, surprisingly little research has directly examined this link. This study examined the role of deliberative decision making (the tendency to consider options and consequences before making a decision) and social contextual variables (parenting and friend influences) in alcohol and drug use, risky sex, and delinquency. Participants were 7,748 adolescents (50% female) in grades 7–11 from the Add Health dataset (M age = 14.87, SD = 1.54). Hierarchical regression analyses revealed that deliberative decision making and contextual variables were associated with risk behavior concurrently and 1 year later. Furthermore, deliberative decision making interacted with social contextual variables in some models, indicating that deliberative decision making may be especially important in certain contexts. These findings suggest that both cognitive and social factors need to be considered to explain adolescents’ decisions to engage in risk behavior.     

The indirect detection of bleach (sodium hypochlorite) in beverages as evidence of product tampering

Bleach (sodium hypochlorite) has been identified as the adulterant in a relatively large number of product tamperings that have been investigated by the Forensic Chemistry Center (FCC) of the U.S. Food and Drug Administration. In this work, household bleach was added to 23 different beverages at each of three levels. The impact of sodium hypochlorite on these beverages over a 13-day study period was evaluated using the following techniques: diphenylamine spot test for oxidizing agents, potassium iodide-starch test paper for oxidizing agents, pH, iodometric titration for quantitating hypochlorite, ion chromatography for chloride and chlorate quantitation, automated headspace sampling with gas chromatography-flame ionization detection (GC-FID) for determination of chloroform, and visual and organoleptic observations. This study has shown that hypochlorite is fragile when added to most common beverages and typically breaks down either partially or completely over time. In cases where a beverage is suspected of being adulterated with bleach but tests for hypochlorite are negative, it is still possible to characterize the product to demonstrate that the results are consistent with the addition of bleach. An adulterated product will give a positive test for oxidizing agents using the diphenylamine spot test. It is likely that the pH of the adulterated product will be higher than a control of that product. Ion chromatographic analysis shows elevated chloride and chlorate as compared with a control. And, chloroform may also be detected by GC-FID especially if the beverage that was adulterated contains citric acid.     

The Polish Blitz,More than a Mere Footnote to History: Poland and Preventive War with Germany, 1933

The January 1933 appointment of Adolf Hitler as Chancellor of Germany marked the beginning of the end of the fragile post-war peace throughout Europe. The Polish leadership had good reason to fear his threats of revising the Treaty of Versailles. Realising that Hitler was too dangerous to remain in power, the Polish leadership led by Marshal Józef Pi?sudski prepared for a preventive war against Germany. Unfortunately, the appeasement policy among the Western Powers condemned this plan to failure and forced Poland into signing a non-aggression pact with Germany in 1934; thus dooming Poland's existence. To test his premonitions about Hitler, Pi?sudski created several international “incidents” concerning the Free City of Danzig, designed to test both Germany and whether the Western Powers would fight to uphold the Treaty of Versailles. Pi?sudski's efforts offer proof that Poland deserves more credit for its determination to deal with a rising tide of Nazi Germany.     

Relations of Stress and Drinking Motives to Young Adult Alcohol Misuse: Variations by Gender

Journal of Youth and Adolescence - Theory and empirical findings have linked stress exposure to young adult alcohol misuse, but the processes underlying this association have not been fully...     

Pubertal timing and grade effects on adjustment

Effects on adjustment of biological maturation and social timing were compared using data from a longitudinal sample of 335 young adolescents, who were followed from the sixth through eighth grades. Biological maturation was estimated from the relative timing of the adolescent growth spurt. Social timing was assessed by grade in school. Five adjustment constructs were examined: school achievement (course grades in five subjects), family relations (a 17-item scale), peer relations (a 10-item scale), body image (an 11-item scale), impulse control (an 8-item scale), and psychopathology (an 11-item emotional tone scale and an 11-item general psychopathology scale). All but one adjustment construct showed grade effects, but only three of the six constructs showed pubertal timing effects. There were no grade by pubertal timing effects. Although there were gender differences for some of the adjustment constructs, there were no gender by pubertal timing effects. The results are discussed in terms of the life-span developmental perspective.Received Ph.D. from the University of Chicago in 1973. Research interest is biopsychosocial development in early adolescence, with a focus on sex differences.Received Ph.D. from the University of Chicago. Research interests are social development, biosocial interactions in early adolescence, and sex differences.