Class Notes (810,913)
Canada (494,374)
Psychology (4,979)
PSYCH 3M03 (32)

Week 7 - Oct 11 - Reproduction Chapter 7(a) - PSYCH 3M03

2 Pages
Unlock Document

McMaster University
Aadil Merali Juma

LECTURE 7 PSYCH 3M03 Chapter 7: Reproduction October 11, 2013  Courtship patterns vary among species o Some species have a long courtship patterns, some mate often with little courtship  Pheromones, tactile stimuli, visual stimuli all input into sexual arousal o  Sexual behaviour is largely innate once initiated, but can be modulated by learning o See sexual behaviour in infancy o At base of innate reflexes Mammalian Female vs. Male Strategies – asymmetrical;  Female o Limits to number of ova + offspring o Limits to age of fertility (pre-puberty, menopause) o Heavy investment in pregnancy and nurturance o Generally more cautious, as mating in wrong conditions can be costly; depends on species and circumstances o Certainty of maternity (knows that young is theirs); willing to nurture  Male o Sperm are numerous o Less required investment o Effort may end at insemination; does not help to nurse (often in non-human mammals; sometimes in humans) o Multiple mating’s propagate genes o Intense competition with other males (root of inter-male aggression; differential reproduction, some mate more than others) o Paternity confidence causes risk of cuckoldry (raising another’s young as own) o Bonding usually requires confidence; investment with young is correlated with paternity confidence o Inter-male competition or mates can be violent  Sexual dimorphism Human Reproductive Strategies  K-selected species – small number of offspring; heavy investment, prolonged juvenile period  Bi-parental care is common but not universal; bi-parental care is better  Variance among individuals and across cultures  Males vary more in reproductive success than do females  Evolutionary lag has caused birth control in human culture; voluntary nature of reproduction has never arose in evolution Mating and Bonding  Monogamy – one male and one female o More dominant males lose reproductive potential o Lower status males gain o Female-female competition for dominant males o Most common in human culture  Serial mo
More Less

Related notes for PSYCH 3M03

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.