If you need to perform a fast sequence of 3 movements, how will your RT for initiating this movement sequence compare to your RT for initiating a sequence of 6 movements? The RT for the 3 movements will be:

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Question restatement: You’re asked to compare reaction times (RT) when initiating a fast sequence of 3 movements versus initiating a sequence of 6 movements. Which statement describes the RT for the 3-movement sequence?

Option a: "The same for both movement sequences". This would imply no difference in RT regardless of sequence length, which contradicts general motor control findings: longer planned sequences typically require more preparation and may delay initiation, so this option is unlikely.

Option b: "Faster than for the 6 movements". This aligns with the idea that shorter sequences require less planning, fewer motor programs to initiate, and thus a shorter RT. In tasks where sequence length increases, preparatory processing and initiation latency tend to grow, making the 3-movement initiation faster.

Option c: "Slower than for the 6 movements". If 3 moves were slower to initiate than 6, that would contradict the common expectation that more actions to prepare and coordinate generally lead to longer RTs. This option typically reflects the opposite of standard findings in sequencing and motor programming.

Option d: "RT cannot be measured in these movement situations". In most experimental setups, RT to initiate a defined movement sequence can be measured (e.g., time from cue to first movement onset). Claiming RT cannot be measured would be incorrect given typical methodologies used in motor sequence research.

Putting this together, the reasoning supports that the RT for initiating 3 movements is shorter, i.e., faster, than for initiating 6 movements, because fewer actions require less planning and fewer processing resources at the initiation moment. Therefore, option b is the most consistent choice with established principles of motor sequence initiation and planning.

If you need to perform a fast sequence of 3 movements, how will your RT for initiating this movement sequence compare to your RT for initiating a sequence of 6 movements? The RT for the 3 movements will be:

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