Ralf Lindman

Testosterone, aggressiveness, and antisocial personality

Testosterone levels were examined in prisoners convicted of violent crimes (n = 13), in men previously convicted of violent crimes but currently not in prison (n = 15), in non- violent alcoholics (n = 15), and in randomly selected control males (n = 16). Morning, afternoon, and evening testosterone levels were assessed after a minimum alcohol absti- nence period of 24 hr. Violent and nonviolent men did not differ in plasma total test- osterone level on any sampling occasion. In violent men, however, testosterone levels were significantly correlated with hostility, as measured by the Derogatis Symptom Check List. Most violent men were diagnosed with Antisocial Personality Disorder (ASP) ( DSM- III-R; 301.70), and the unweighted ASP symptom count also correlated significantly with testosterone levels in these subjects. We suggest that individuals whose life histo- ries involve numerous antisocial behaviors tend to have high testosterone levels even when interpersonal violence is excluded. This, however, does not eliminate the possibil- ity that males who are characterized by high hostility may also have elevated testoster- one levels. Violent predisposition and antisocial conduct beginning in early adolescence predict adult aggressive behaviors, which are augmented by power-related alcohol ex- pectancies and alcohol abuse. Aggr. Behav. 25:113-123, 1999.

Social and solitary drinking: Effects on consumption and mood in male social drinkers

Abstract Rates of alcohol consumption and mood development were studied in four male social drinkers serving as their own controls: (a) in a real life social drinking situation of the subjects choice, and (b) under artificial solitary drinking conditions. Almost twice as much alcohol was consumed during party drinking, while solitary drinking was experienced as aversive and failed to induce the euphoric effects reported at the party. Implications for tension reduction theory and adjunctive behaviour theory were discussed.

Testosterone, sexuality and antisocial personality in rapists and child molesters: a pilot study.

Morning and afternoon levels of saliva testosterone levels in Finnish imprisoned rapists (n = 10) and child molesters (n = 10) were compared to those in randomly selected control subjects (n = 31). The associations of saliva testosterone with sexual behavior and antisocial personality traits were explored in all groups. The sexual offenders and control subjects did not differ in the between-subjects main effect estimated for the averaged morning and afternoon testosterone levels. Seven rapists and three child molesters met the criteria for antisocial personality disorder (ASP). In the sexual offenders, a summed ASP index was positively correlated with mean saliva testosterone. Sexual activity as estimated from self-reports of sexual intercourse and masturbation was significantly related to testosterone in both rapists and child molesters but not in the control males. The implications of these results are discussed.

Verbal interactions of aggressively and nonaggressively predisposed males in a drinking situation

The effects of progressive intoxication were studied in male social drinkers classified from prior histories as either aggressively (A) or nonaggressively (NA) predisposed while intoxicated. Two groups of two A and two NA subjects engaged in videotaped group discussions that were analyzed by Bales interaction process analysis (IPA). At comparable levels of ad libitum alcohol intake in a natural drinking environment, significantly more verbal activity was displayed by the A subjects than by the NA subjects (P <.001), including IPA category D (P <.025). The A subjects tended to address the group as a whole rather than individual members (P <.001) and NA subjects rather than other A subjects (P <.01). Free testosterone levels assessed from saliva were higher among A subjects than among NA subjects (P <.05) with no significant changes related to time and progressive intoxication. The results suggest that the tendency to behave aggressively while intoxicated may be a fairly stable individual trait, possibly related to androgen levels and active or coercive modes of social communication.

Serum testosterone, cortisol, glucose, and ethanol in males arrested for spouse abuse

Concentrations of ethanol, testosterone, cortisol, and glucose were determined in serum obtained from 16 males taken into police custody after incidents of spouse abuse. The mean blood ethanol level at the time of arrest was 33.3 ± 2.6 mM. Serum testosterone levels were significantly lower and cortisol levels higher at the time of police intervention (within 1 hour of the incident) compared to control data collected later from the subjects when sober. Offenders did not differ from a group of nonviolent pub patrons at similar blood ethanol levels (35.9 ± 4.5 mM) with respect to serum testosterone, cortisol, or glucose, but their sober state cortisol and glucose concentrations were significantly higher compared to a control group of nonalcoholic men. Intoxication or acute hormonal changes were thus not specifically associated with violent behaviour. Provocative cues, however, may have been more frequent in the offender families, as Straus Conflict Tactics data showed that offenders and victims resorted to verbal aggression significantly more often than control families. The significantly elevated cortisol and glucose concentrations in offenders when sober compared to nonviolent controls could be viewed as direct effects of life stress, or as indirect effects of stress mediated by learned escape drinking. Excessive drinking as well as spouse abuse could be maladaptive coping strategies that principally serve to maintain the status quo, physiologically as well as psychologically.

Anticipated Effects of Alcohol Consumption as a Function of Beverage Type: A Cross-Cultural Replication

Abstract The relation between type or form of alcoholic beverage consumed and expectations about emotional or behavioral concomitants of drinking was investigated. One hundred and thirty-four Finnish undergraduates (45 men and 89 women) with a mean age of 20.9 years were administered a survey inquiring about the association between each of 86 feelings or actions and four categories of alcoholic beverage (beer, wine, mixed drinks, and straight drinks), assuming comparable levels of intoxication. Multiple discriminant analyses indicated that distinctive and stable expectancies were associated with beer (tension reduction), wine (social pleasure), and straight drinks (mainly negative consequences often related to heavy drinking), while expectancies for mixed drinks were shared by other beverage types. The se findings replicated and extended those obtained with a U.S. sample.

Age as a modifier of sexually aggressive attitudes in men.

Male attitudes and behaviours related to imagined sexual aggression were investigated in 99 Finnish men (mean age 24.3 years). Structural equation modelling suggested that imagined sexual aggression was directly predicted by hostile masculine ideologies and past antisocial acts, and indirectly by subject age (hostile masculinity decreased with age). For more detailed analyses of age effects on attitudes, the subjects were split into an older and a younger group. A small group of incarcerated rapists (n = 8; mean age 33.4 years) was included for comparative purposes; these were similar in age to the older group (n = 34; mean age 31.5 years) and were given the same attitude items. The younger men and the rapists expressed significantly more hostility toward women and acceptance of rape myths, and had a higher likelihood of committing rape than older men. Although younger men accepted interpersonal violence and sexual dominance, their attitudes were not necessarily reflected in past sexually aggressive behaviours, as they were in the rapists who differed from the younger men mainly in terms of their past antisocial activities.

Confirmatory factor analysis of the AEQ‐A questionnaire in Finland

The Adolescent version of the Alcohol Expectancy Questionnaire (Brown et al., 1980) was administered to a male population sample in Finland (N = 195; median age 18.5 years). Three issues were investigated: Did the items of each subscale measure single latent constructs? Was the AEQ-A better described by a single-factor model (e.g., global positive expectancy) or by a null model implying scale independence? Were alcohol expectancies related to drinking habits? Confirmatory factor analyses by PRELIS2 and LISREL8 indicated that single-construct models were appropriate only for the Enhanced sexuality and Increased arousal scales while several items were unrelated to the postulated latent constructs in the other five scales. Adequate fits were obtained for these scales only when unrelated items were removed and/or analyses were based on nondichotomus scores derived from contentwise homogenous groups of items. Even when revised so that the each scale formally fitted a single latent construct, the resulting latent constructs were not well described by either the single-factor model or the null model. Expected social benefit in terms of the revised Enhanced or impeded social behavior scale was the most significant predictor of drinking frequency while quantity consumed per drinking occasion was significantly related to the Improved cognitive and motor abilities scale only.

Early antecedents of spouse abuse

Males taken into police custody for reported spouse abuse (n = 19) and a matched control group (n = 19) were asked to describe the drinking habits of their parents and the extent of intra-family violence witnessed by them as children. The retrospective data were compared to the participants own present alcohol use and aggressiveness (CTS). Excessive paternal drinking and intra-family violence were recalled significantly more often by the spouse abusers than by the controls. A latent structure model suggested that the accumulated violence history was less well predicted by either paternal violence or present aggressiveness than by the direct and indirect effects related to drinking. Context-specific social learning could explain why the parental drunken violence behavior pattern witnessed by the child was repeated by the adult spouse abuser. Aggr. Behav. 23:239–243, 1997.

On the direct estimation of mood change

A scaling model is described that allows mood variation to be assessed from direct estimates of change, for given dimensions of mood. Possible applications are, for instance, psychopharmacological experiments where a natural reference state may not exist or lengthy series of observations where the invariance of a “standard state” is difficult to control. An experiment was conducted to test the interdimensional consistency of scale values obtained by the proposed model for alcohol-induced changes in tension state and euphoria.