Experiments Flashcards
what are the two types of experiments
laboratory and field
describe laboratory experiments
hypothesis is tested under a controlled environment focusing on independent and dependant variables
describe field experiments
hypothesis is tested in the ‘real world’ those involved are usually unaware
who prefers experiments
positivists
give a theoretical strength of lab experiments
reliable; controlled variables=easier to replicate and find cause/effect relationships
give two theoretical weaknesses of lab experiments
- Hawthorne effect= behaviour changes due to artificial setting= less valid
- artificial setting means it is less applicable to real life
give an ethical issue with lab experiments
consent; they usually involve some deception so consent may be impossible to obtain
give two theoretical strengths of field experiments
- less artificial than a lab= ecological validity
* no hawthorne effect = more valid
give two theoretical weaknesses of field experiments
- lacks reliability
* less control over variables = less applicable
give two ethical weaknesses of field experiments
- don’t gain consent
* hard to protect from psychological harm