Step 1: Define reaction time
Reaction time is a measure of the time taken to respond to a stimulus. It is a quantitative, objective measure frequently used in psychology, psycholinguistics, and cognitive science research.
Step 2: Identify relevant methods
(A) Behavioral methods — Yes, reaction time tasks (like lexical decision tasks, Stroop tests) are core behavioral measures. ✔
(B) Experimental methods — Yes, reaction time is often measured in controlled lab experiments to test hypotheses about cognition and language processing. ✔
(C) Non-behavioral methods — Incorrect; these involve observation, archival analysis, or non-performance measures. ✘
(D) Qualitative methods — Focus on descriptive data (interviews, ethnography), not numerical measures like reaction time. ✘
Therefore, reaction time is specifically tied to behavioral and experimental methods.
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\boxed{\text{Correct Answer: (A) and (B)}}
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Examine the given data. The value of X is ________ (in integer). 
Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1st round, the 4th student behind P leaves the game.
After the 2nd round, the 5th student behind Q leaves the game.
After the 3rd round, the 3rd student behind V leaves the game.
After the 4th round, the 4th student behind U leaves the game.
Who all are left in the game after the 4th round?
