Evaluation

• What was advantageous for our ancestors regarding menstruation?

  Females menstruating together increased pregnancy chances
• How did synchronized menstruation benefit newborns?

  It allowed for collective care, enhancing survival
• What does menstrual synchronisation suggest about its purpose?

  It indicates a potential evolutionary advantage
• What was Schank's (2004) argument regarding menstrual synchrony?

  Too many females cycling together increases competition
• What is the most adaptive evolutionary strategy according to Schank?

  Avoiding synchrony among females
• What did Penton-Voak et al. (1999) find about women's mate preferences?

  Preferences varied at different menstrual cycle stages
• What type of face do women prefer for long-term partners?

  A slightly feminised face
• What do women prefer during the ovulatory phase?

  More masculinised faces
• Why might women prefer feminised faces?

  They represent kindness and parental care
• What do masculinised faces likely represent?

  Good genes for offspring
• How can Seasonal Affective Disorder (SAD) be treated?

  With phototherapy using a lightbox
• What does phototherapy simulate for SAD treatment?

  Strong blue light in the morning and evening
• What is the purpose of phototherapy for SAD?

  To reset melatonin levels
• What percentage of SAD sufferers found relief from phototherapy according to Eastman (1998)?

  60%
• What did Eastman (1998) also find regarding the study on SAD treatment?

  There was a placebo effect observed
• What percentage of participants reported relief using a sham generator?

  30%