IEC's

Emergence of psychology as a science

+ cause and effect relationship - Iv is the only thing affecting the DV

+ reliable - held in a lab, can be repeated, everything is standardised and randomised, EVs are controlled

- lacks ecological validity- held in a lab, participants know they are being studied, could guess the aim

- many of the topics are unobservable- thoughts can't be seen and measured, can't test the falsifiability

Behaviourist approach

+ scientific- empirical, conducted in a controlled environment

+ practical application- different…