Main Types of Research Design (quantitative)

descriptive design

-Type of research used to describe the characteristics of a population, situation, or phenomenon.

-It does not explain why something happens or determine cause-and-effect.

Correlational design

-Examines relationships between two or more variables without manipulating them.

-No manipulation, no cause-effect.

positive correlation

– Both variables increase or decrease together (types of correlation)

negative correlation

– One variable increases while the other decreases (types of correlation)

no correlation

– No systematic relationship

comparative/ casual-comparative design

-Research design examines differences between two or more groups based on a variable.

-The researcher does not manipulate variables.

-It attempts to determine possible causes or factors that may explain differences.

experimental/ quasi-experimental design

-It is used to determine cause-and-effect relationships between variables by manipulating an independent variable and measuring its effect on a dependent variable.

quasi-experimental design

-It is similar to experimental design but lacks full control over the assignment of participants to groups.