Concept:Intra-individual differences refer to variations in abilities, traits, or behaviours within the same person (e.g., a student scoring high in math but low in language). In contrast, inter-individual differences are variations between different people.
Explanation:To identify the correct example of intra‑individual differences, we check each option:
Option A: Compares performance of two different people (‘A’ and ‘B’) – this is inter‑individual.
Option B: Compares learning time between two different people – also inter‑individual.
Option C: Describes a single person ‘A’ who has interest in both academics and games but always excels in games. This shows a difference between two traits (academic ability vs gaming ability) inside the same individual. Hence, it is intra‑individual.
Option D: Compares the behaviour of two different persons (‘A’ vs ‘B’) – inter‑individual.
Therefore, only option C matches the definition of intra‑individual differences.
Answer:Option C – Though having interest in academics and games, ‘A’ always used to excel in games.