AO3 - Ainsworths strange situation

• The strange situation is culturally biased as a method, and may not reflect cultural differences.
• The sample was only American children which makes the findings bias (ethnocentric).
• The sample is not representative of the wider population, which limits generalisation.
• The lab based environment may have increased the likelihood of demand characteristics from the mothers.
• The sample was restricted to 100 middle class American infants and their mothers, so lacks population validity.
• As the research is highly operationalised and controlled the study has high reliability.