Types Of Experiments

Question 1

Types of experiment

Answer 1

• laboratory experiment
• field experiment
• natural experiment

Question 2

Evaluation of lab experiment

Answer 2

+ standardised procedure
+ high control
- lacks mundane realism
- lacks ecological validity
- experimenter effect

Question 3

Evaluation of field exp.

Answer 3

+ mundane realism
+ ecological validity
+ no experimenter effect - no demand characteristics
- not reliable
- low control

Question 4

Evaluation of natural exp.

Answer 4

+ high ecological validity
+ high in mundane realism
+ No experimenter effect
- low control
- lacks standardised procedure
- not ethical
- cannot establish cause and effect - low internal validity
- low reliability

Question 5

Feature of lab exp.

Answer 5

• in a highly controlled artificial setting away from everyday environment
• IV manipulated, DV measured
• a study of cause and effect involving 2 or more conditions
• all extraneous variables aim to be controlled
• random allocation of p.pants to conditions
• standardised procedure used

Question 6

Feature of field exp.

Answer 6

• in a natural setting where it is an everyday environment but extraneous variables cannot be controlled
• still manipulates IV to see changes in DV
• extraneous variables cannot be controlled
• standardised procedure may be used -limited control
• can still study cause and effect with varies conditions of IV

Question 7

Feature of natural exp.

Answer 7

• an advantage of natural situation to carry out investigation that we themselves cannot manipulate
• researcher only records the effect of DV
• unable to control extraneous or control variables
• no standardised procedure
• not always in a natural setting