RESEARCH METHODOLOGY

Detailed explanation-1: -Another control technique used in causal-comparative research is to compare subgroups that are clustered according to a particular variable. For example, the researcher may choose to group and compare students by grade level.

Detailed explanation-2: -Causal-comparative research is a family of research designs used to examine potential causes for observed differences found among existing groups. Causal-comparative research is useful for the study of causes where experimental assignment or manipulation is infeasible, unethical, or in some way prohibited.

Detailed explanation-3: -In a causal-comparative study, groups should be compared on: those variables suggested by the researcher’s rationale. The most commonly used statistical inference test in causal-comparative studies is a t-test for differences between means.

Detailed explanation-4: -Is either retrospective or prospective. The independent variable is not (nor should it be) manipulated by the researcher. The groups are already formed. Differences between the groups is not brought on by the researcher. Typically explore & compare one independent variable.