Suchergebnisse

A social relations model was developed for 5 years of behavioral recordings from a captive colony of Zebrafinches (Taeniopygia guttata). A quantitative ethogram was applied, using one-zero focal animal sampling on an ethologically comprehensive checklist of 52 behavioral items (Figueredo, Petrinovich, & Ross, 1992). Of the 9 ethological factors previously identified, only 4 of the 6 social factors (Social Proximity, Social Contact, Social Submission, and Social Aggression) were used. Major results were as follows: (1) Individual finches showed systematically different response dispositions that were stable over a 5-year period as both subjects and objects of behavior; (2) Interactions between finches differed systematically by the sexes of both the subjects and the objects of behavior; (3) Behavioral interactions between finches and their mates differed systematically according to the subjects' sex, but also differed systematically from those with other members of the objects' sex; (4) Behavioral interactions between finches and their relatives differed systematically between different discrete categories of relatives, but did not vary as a systematic function of either graded genetic relatedness or familiarity due to common rearing; and (5) Behavioral interactions between finches and their relatives showed an overall bias towards preferential interactions with male relatives. DOI:10.2458/azu_jmmss_v1i1_figueredo

Abstract

Aims
Germany is experiencing a decline in alcohol consumption but not for every alcoholic beverage type. Given the differential health impacts of alcoholic beverage type, it is important to understand the drivers of these trends. We investigated: (a) temporal trends in beverage preference and (b) the effects of age, period and cohort on these trends.


Methods
Data came from nine waves (1995–2018; ntotal = 75,550) of the German Epidemiological Survey of Substance Abuse, a nationally representative household survey of individuals aged 18–59 years. The quantity of beer, wine, spirits and mixed drinks drank in the last 30 days was transformed into grammes of ethanol, and the beverage type preference was estimated as the proportion of total ethanol consumption. Fractional multinomial logit regression was applied to analyse the age, period and cohort effects on temporal trends of beverage preference by sex.


Results
The preference for spirits and mixed drinks decreased with increasing age, while the preference for wine increased with no age effect on beer. There was a general decrease in the preference for beer and an increase in the preference for wine among both sexes, with an additional increase in the preference for spirits in males.


Conclusion
Trends in beverage preference were more related to individual ageing and changes in the whole population than to cohorts. With the continued reduction in alcohol consumption, the decreasing preference for beer and the growing preference for wine suggest a positive development. Trends of an increasing preference for spirits in males are of concern.