Less motor (re-)planning requires fewer working memory resources.

The linear contrast was not significant, F (1,27) = 1.366, p = 0.253, η 2 = 0.003; the quadratic contrast was highly significant, F (1,27) = 114.315, p < 0.001, η 2 = 0.073.

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The interaction of ‘condition’ × ‘announcement’ was only close to significance, F (1, 27) = 4.199, p = 0.050, η 2 = 0.012, and ordinal, so both main effects could be interpreted independent of the interaction.

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