9. Difference between causal comparative and experimental research designCausal Comparative or Ex Post Facto Research Design: This research design attempts to explore cause and affect relationships where causes already exist and cannot be manipulated. It uses what already exists and looks backward to explain why.
Experimental Research Design: This design is most appropriate in controlled settings such as laboratories. The design assumes random assignment of subjects and random assignment to groups. It attempts to explore cause and affect relationships where causes can be manipulated to produce different kinds of effects. Because of the requirement of random assignment, this design can be difficult to execute in the real world (non-laboratory) setting.
The differences in causal-comparison and experimental studies are:
CCS: individuals are not randomly selected but selected because they belong to groups
ES: individuals are randomly selected and assigned to two (or more) groups
CCS: the researcher cannot manipulate the independent variable
ES: the researcher manipulates the independent variable
CCS: the independent variable has already occurred and cannot be manipulated
ES: the researcher manipulates the independent variable to determine its effects
CCS: the random sample is selected from two already-existing populations
ES: the random sample is selected from a single population
* * *
If you found this useful, do remember to like Psychology Learners on Facebook and subscribe by email.
In a hurry? Download the full solved IGNOU assignments from the links below >>MPC001: Cognitive Psychology
MPC002: LifeSpan Psychology
MPC003: Personality: Theories and Assessment
MPC004: Advanced Social Psychology
MPC005: Research Methods in Psychology
MPC006: Statistics in Psychology
For 'SuperNotes' click here.
For Free eBook previews click here.
For other IGNOU MAPC material click here.
For IGNOU related information and material click here.