weaknesses

• people with poor relationships may not take part - biased sample
• more females took the quiz than men - gender bias
• in one area the quiz only appeared in america newspaper - population bias - population validity - culture bias
• questionaire rely on people being honest and accurate with thei answers. dc can effect this
• the questionaires recalled people reflecting on their childhood memories which may not eb accurate information
• the questionaire was closed questions
• study was conducted in 1987