Menopause: A comparative life history perspective

Menopause in Blackfeet women--a life span perspective.

A lifespan perspective, combining quantitative and qualitative approaches, is used to examine factors related to the timing of menopause in Blackfeet women of northern Montana (USA). Cross-sectional survey data demonstrate a median age at menopause using a status quo method of 51.6 years, and a mean age of 47.0 +/- 5.0 years among those women who had already experienced menopause. Age at menopa...

Impaired Perinatal Growth and Longevity: A Life History Perspective

Life history theory proposes that early-life cues induce highly integrated responses in traits associated with energy partitioning, maturation, reproduction, and aging such that the individual phenotype is adaptively more appropriate to the anticipated environment. Thus, maternal and/or neonatally derived nutritional or endocrine cues suggesting a threatening environment may favour early growth...

Sexual Restrictedness in Adolescence: A Life History Perspective

Life history is an evolutionary approach to the study of the timing of developmental milestones and reproductive activities. We follow this theoretical approach in an analysis of the sexual attitudes, beliefs and behaviors of over 13,000 12 to 19 year olds who participated in a sexual education program promoting abstinence until marriage. Factor analyses of this survey data revealed a general f...

Impulsivity, sensation seeking and reproductive behaviour: A life history perspective

Impulsivity has often been invoked as a proximate driver of different life-history strategies. However, conceptualisations of ‘‘impulsivity’’ are inconsistent and ambiguities exist regarding which facets of impulsivity are actually involved in the canalisation of reproductive strategies. Two variables commonly used to represent impulsivity were examined in relation to reproductive behaviour. Re...

A Comparative Life History Study of the Mice