Answer:
cross-sectional design; longitudinal design
Step-by-step explanation:
Cross-sectional design: In psychological research, the term "cross-sectional design" is described as one of the different study designs that are considered as an observational study. In this study, a researcher measures the "exposure" and the "outcome" in the study subjects or participants simultaneously.
Longitudinal design: In psychological research, the term "longitudinal design" is described as a study of participant or group of participants in a similar condition and over a period in time. It can last from a week to months and even to years.