Reading outside the study materials in the last month

N

SD

M

Sig.

F

Min.

Max.

seven-year-olds

144

0.2

2.35

0.000

5.07

1

3

eight-year-olds

176

0.4

2.31

nine-year-olds

229

0.3

2.23

ten-year-olds

254

0.5

2.14

eleven-year-olds

366

0.2

2.12