When thinking about whether the study is experimental or non-experimental, it is helpful to substitute the words "intervention" or "implementation" for the word experimental. In other words, did the researcher introduce an intervention or implementation to determine if there was an effect of the intervention or implementation on the sample studied? If there was an intervention or implementation used, then the study is an Experimental study. Without an intervention or implementation, the study must be considered a Non-experimental study. Experimental Studies include: Randomized control trial where the sample is randomized into groups. Quasi experimental study where there is NO randomization but rather groups were conveniently selected. Non-experimental studies include: Surveys, questionnaires, instruments to collect data. These studies then simply analyze the data and report the results. Examples of Non-experimental studies include: o Retrospective studies o Case studies o Cross-sectional studies o Cohort Comparison studies o Prospective studies o Descriptive studies o Correlational single studies. here the definition of the experimental vs non experimental. is it still experimental