Question

What are the correct matches?

Answer 1

1 - Experiment
2 - Longitudinal
3 - Correlation
4 - Cross-sectional

Explanation:

Good application of statistical research design to psychology.
Let's define the terms:
Experiment: Any planned/designed study to find out possible significance or interactions between different things. The first one is this type of open study.

Cross-sectional: Looking for possible correlations specifically in larger groups and/or across different activities (TV and Violence). This is the fourth one.

Longitudinal: Any study taking place over a period of time - usually in terms of years. The second one is this type of study.

Correlation: Search for interactions between specific items. Very general, similar to "experiment". The third one best fits this description.