A03

• X evidence to contradict influence of e.z by yank & schank?

  • natural experiment - studied 186 chinese women living in uni halls over a year
  • found no evidence of womens cycles becoming synchronised
  • shows that mcclintocks findings not fully representative of all womens menstrual cycle
  • may be other factors other than pheromones that control this b.r
• X methodological issues for infradian rhythms?

  • many evs such as sleep/diet/exercise that can affect menstrual cycle
  • rarely controlled in studies such as mcclintocks
  • means other factors affecting timings of cycle
  • difficult to determine cause & effect between menstrual cycle & i.r
  • more controlled studies need to be conducted that control for diet/stress levels
• 1 * of yank & schanks study?

  1. used natural experiment