57 
Table 7 
Proportional reasoning: 
Solution probabilities at age 15 
by gender 
Urban sample 
Gender 
male 
25 
Variable Task 
35 40 45 50 55 
N 
30 
- 
0% 
RATMIN5 Pred. Height Mr. Mini" 
5,4% 0% 5,4% 57,1% 30,4% 1,8% 56 
Gender 
female 
Variable 
Task 
N 
45 
25 
50 55 
40 
30 
35 
RATMINS 
Pred. Height Mr. Mini" 2,0% 
6,0% 
4,0% 10,0% 48,0% 26,0% 4,0% 50 — 
Table 8 a 
Proportional reasoning: 
Solution probabilities at age 15 
by social class in two categories: low (SES 1-3), high (SES 4-6) 
Urban sample 
SES 
low 
Variable Task 
50 55 N 
30 35 40 45 
25 
RATMIN5 Pred. Height Mr. Mini“ 
0,0% 7,3% 1,8% 7,3% 47,3 % 32,7 % 3,6% 55 
SES 
high 
Variable 
N 
Task 
— 
25 
30 35 40 45 50 55 
RATMIN5 Pred. Height/Mr. Mini" 
2,0% 
3,9% 2,0% 7,8% 58,8% 23,5% 2,0% 51 
Table 8 b 
Proportional reasoning: 
Solution probabilities at age 15 
by social class in six categories 
Urban sample 
Variable Task 
N 
25 30 35 40 45 50 55 
SES 
— 
RATMINS Pred. Height/Mini low 
0% 7,1% 7,1% 7,1% 50,0% 21,4% 7,1% 14 
0% 8,0% 0% 4,0% 40,0% 44,0% 4,0% 25 
RATMINS Pred. Height/Mini low/h 
RATMIN5 Pred. Height/Mini middle 0% 6,3% 0% 12,5% 56,2% 25,0% 0% 17 
RATMINS Pred. Height/Mini midh 5,6% 5,6% 5,6% 16,7% 50,0% 16,7% 0% 18 
RATMIN5 Pred. Height/Mini high 0% 0% 0% 5,0% 60,0% 30,0% 5,0% 20 
RATMIN5 Pred. Height Mini highh 0% 7,7% 0% 0% 69,2% 23,1% 0% 13