Longitudinal and cross sectional studies – UGC NET Question

Statements A, B and E correctly distinguish longitudinal and cross-sectional studies, while statements C and D are incorrect. Statement A is true because cross-sectional studies gather data from different groups at a single point in time. Statement B accurately describes longitudinal studies as following the same respondents over an extended period, and statement E is correct since panel studies are a specific form of longitudinal design where the same sample is repeatedly studied. Statement C is false because longitudinal studies are typically more, not less, time-consuming and costly than cross-sectional ones, and statement D is false because developmental change within the same individuals is better studied with longitudinal rather than cross-sectional designs.

Option A:
Option A brings together A, B and E, all of which are true and provide a coherent picture of the two designs. It recognises that cross-sectional studies are single-time studies on different groups, longitudinal studies follow the same group and panel studies are a subtype of longitudinal designs. It excludes C and D, which misrepresent cost, time and suitability for developmental research, so this combination is the correct answer.

Option B:
Option B includes A and B but omits E. While A and B are correct, leaving out E means the important information that panel studies are longitudinal is not reflected. Because not all true statements are included, this combination is incomplete and cannot be accepted.

Option C:
Option C combines B, D and E and therefore includes D, which is false. Although B and E are correct, D wrongly claims that cross-sectional designs are ideal for tracking developmental change within the same individuals over long periods. Including an incorrect statement makes this option invalid.

Option D:
Option D lists A, D and E and hence also suffers from including D. While A and E are correct, D misuses the role of cross-sectional designs in studying long-term change. Since the option mixes true and false statements, it cannot represent the full set of correct statements required by the question.