RESEARCH METHODOLOGY

Detailed explanation-1: -The only method that will establish a cause-and-effect relationship is an experimental research design. A true experiment must feature a control group as one of the experimental groups, along with random sampling from the population and random assignment of the study subjects to the experimental groups.

Detailed explanation-2: -To establish causality you need to show three things–that X came before Y, that the observed relationship between X and Y didn’t happen by chance alone, and that there is nothing else that accounts for the X-> Y relationship.

Detailed explanation-3: -Causal research, sometimes referred to as explanatory research, is a type of study that evaluates whether two different situations have a cause-and-effect relationship.