what are the features of a lab experiment

Strengths of a Lab experiment

weaknesses of a lab experiment

what is a natural experiment

weaknesses of a natural experiment

what is a field experiment

strengths of a field experiment

weakness of a field experiment

what are demand characteristics

external validity

Internal validity

ecological validity

population validity

temporal validity

Matched pairs experimental design

advantage of matched pairs design

disadvantage of matched pairs design

Repeated measures design

advantage of repeated measures design

disadvantage of repeated measures design

Independent groups design

advantage of independent groups design

disadvantage of independent groups design

what is a directional hypothesis

what is a non directional hypothesis

research hypothesis

null hypothesis