In a research study of Piaget referred to the cognitive development occurring between ages 2 and 7 as the preoperational stage, how would you conduct a study to include.
a) A study design (e.g., correlation, experiment, quasi-experiment).
b) Methods for conducting the experiment (i.e., how would you propose to study their selected topic and what is the IV/DV, if applicable).
c) The timeframe for the study (e.g. longitudinal, cross-sectional, or mixed design).