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Table 2. 

Slopes for RT and Accuracy by Set Size, Separately for Low (2–4) and High (4–6) Set Sizes and Younger and Older Adults


Slopes 2–4
Slopes 4–6
Slopes Difference
Young
Old
t Test
Young
Old
t Test
Young
Old
t Test
RT 43.79 62.69 1.38 64.10 48.92 0.87 20.31 −13.77 1.42 
ACC −0.17 −0.21 0.41 −0.16 −0.27 1.04 0.01 −0.05 0.36 
Throughput 0.98 0.72 2.16** 0.75 0.02 3.95*** −0.23 −0.7 1.93* 

Slopes 2–4
Slopes 4–6
Slopes Difference
Young
Old
t Test
Young
Old
t Test
Young
Old
t Test
RT 43.79 62.69 1.38 64.10 48.92 0.87 20.31 −13.77 1.42 
ACC −0.17 −0.21 0.41 −0.16 −0.27 1.04 0.01 −0.05 0.36 
Throughput 0.98 0.72 2.16** 0.75 0.02 3.95*** −0.23 −0.7 1.93* 

t tests between groups (two tailed): df = 40.

*p < .1.

**p < .05.

***p < .01.

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