In each trial of an experiment,participants see a warning signal and then,a half-second later,see a pair of letters.The participants press one button if the letters are the same (e.g. ,W W)and a different button if the letters are different (e.g. ,P X).In 80% of the trials,the warning signal is identical to the letters that will be shown on that trial.Here are the warning signals and the test stimuli presented on Trial 97 of the procedure:
Group 1: warning signal = L;test pair = L L
Group 2: warning signal = U;test pair = L L
Group 3: warning signal = +;test pair = L L
In this setup we should expect the fastest responses from

Question

Quizplus · Accepted Answer

In this setup, participants are more likely to expect the same letters as the warning signal, as it happens in 80% of the trials. Therefore, when the warning signal is "L" and the test pair is "L L" (Group 1), participants are likely to respond faster because the same letters were expected. On the other hand, when the warning signal is different from the test pair, as in Groups 2 and 3, participants may take longer to process and compare the letters, leading to slower responses. However, the warning signal in Group 3 ("+") may be less informative than the letter "U" in Group 2, which could potentially result in even slower responses for Group 2. Therefore, Group 1 is expected to have the fastest responses, followed by Group 3, and then Group 2 with the slowest.

In Each Trial of an Experiment,participants See a Warning Signal