Biological practical

Cards (8)

  • Aim - investigate relationship between digit ratio and physical aggression scores
  • Alternative hypothesis - Negative correlation between digit ratio of people and their physical aggression score
  • Procedure = informed consent was gained from participants
    Participants given QR code - buss pery aggression
    Asked to answer honestly, given 10 minutes
    Participants instructed to measure their length of ring and index finger to find digit ratio
  • Opportunity sampling 12 students 2 male 10 female
  • Improvement one - increase number of participants
    limit sample size used
    may not be a representative
    increased population validity
  • Improvement two - different different ways of measuring testosterone
    Blood test to measure
    Large marginal errors when testing finger length due to vision + low perception
  • Strength of practical
    • Study with correlational - investigate relationship between aggression and a factor we cannot ethically not practically investigate otherwise - relationship between testosterone and aggression
    • Counterpoint - factors such as trauma upbringing social groups can impact physical aggression score - cannot establish true cause and affect relationship
  • Weakness of practical
    • Low population validity - used 2 males 12 females from a British school - unable to generalise to the rest of population