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Table 4. 

Two-tailed t Tests for Slopes of Activation as a Function of Set Size


Slope 2–6
Slope 2–4
Slope 4–6
Slope 4–6 Minus 2–4
t Test Overall
Young
Old
t Test between
Young
Old
t Test between
Young
Old
t Test between
Overall 4.83*** 1.84* 4.30*** −1.17 2.87** −0.48 2.32** 0.80 −2.39** 2.10** 
BA 18/19 left 4.37*** 1.52 3.58*** −1.35 2.68** −0.69 2.17** 0.83 −2.21** 2.01* 
BA 18/19 right 3.73*** 1.03 4.28*** −1.66 1.09 −0.67 1.27 0.13 −2.47** 1.59 
BA 7 left 4.05*** 0.63 3.96*** −1.44 2.53** −0.55 2.27** 0.99 −2.25** 2.16** 
BA 7 right 4.17*** 1.86* 3.65*** −0.95 1.01 −0.48 1.06 −0.25 −1.98* 1.11 
BA 6 left 5.74*** 1.59 4.27*** −1.02 3.96*** −0.47 2.79** 1.11 −2.37** 2.32** 
BA 6 right 2.60** 1.58 1.76* −0.23 1.59 −0.22 1.36 0.16 −1.06 0.77 
BA 24/32 left 5.78*** 2.58** 4.76*** −0.34 2.92** −0.23 2.66** 0.54 −2.57** 1.93* 
BA 24/32 right 4.06*** 0.97 3.01*** −0.71 2.87** −0.25 2.61** 1.22 −1.73 2.06** 
BA 44/45/47 left 4.14*** 3.91*** 2.87** −0.17 2.46** 0.39 1.44 0.10 −1.22 0.90 
BA 44/45/47 right 2.53** 1.30 2.64** −0.25 0.68 −1.50 1.46 −0.31 −2.26** 0.98 

Slope 2–6
Slope 2–4
Slope 4–6
Slope 4–6 Minus 2–4
t Test Overall
Young
Old
t Test between
Young
Old
t Test between
Young
Old
t Test between
Overall 4.83*** 1.84* 4.30*** −1.17 2.87** −0.48 2.32** 0.80 −2.39** 2.10** 
BA 18/19 left 4.37*** 1.52 3.58*** −1.35 2.68** −0.69 2.17** 0.83 −2.21** 2.01* 
BA 18/19 right 3.73*** 1.03 4.28*** −1.66 1.09 −0.67 1.27 0.13 −2.47** 1.59 
BA 7 left 4.05*** 0.63 3.96*** −1.44 2.53** −0.55 2.27** 0.99 −2.25** 2.16** 
BA 7 right 4.17*** 1.86* 3.65*** −0.95 1.01 −0.48 1.06 −0.25 −1.98* 1.11 
BA 6 left 5.74*** 1.59 4.27*** −1.02 3.96*** −0.47 2.79** 1.11 −2.37** 2.32** 
BA 6 right 2.60** 1.58 1.76* −0.23 1.59 −0.22 1.36 0.16 −1.06 0.77 
BA 24/32 left 5.78*** 2.58** 4.76*** −0.34 2.92** −0.23 2.66** 0.54 −2.57** 1.93* 
BA 24/32 right 4.06*** 0.97 3.01*** −0.71 2.87** −0.25 2.61** 1.22 −1.73 2.06** 
BA 44/45/47 left 4.14*** 3.91*** 2.87** −0.17 2.46** 0.39 1.44 0.10 −1.22 0.90 
BA 44/45/47 right 2.53** 1.30 2.64** −0.25 0.68 −1.50 1.46 −0.31 −2.26** 0.98 

Overall, df = 41; young, df = 11; old, df = 29; young versus old, df = 40.

*p < .1.

**p < .05.

***p < .01.

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