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