Table 1.
Participant Characteristics.
| Age | ||||
|---|---|---|---|---|
| Age group | Min | Max | M | SE |
| Young adolescents | 10.13 | 14.03 | 12.87 | 0.14 |
| Mid-adolescents | 14.27 | 17.87 | 15.93 | 0.19 |
| Adults | 18.34 | 38.14 | 24.93 | 0.91 |
|
IQ | ||||
| Age group | Min | Max | M | SE |
| Young adolescents | 71.54 | 119.51 | 101.38 | 1.89 |
| Mid-adolescents | 74.54 | 113.51 | 98.43 | 1.74 |
| Adults | 77.54 | 133.00 | 108.02 | 2.63 |
|
SES | ||||
| Age group | Min | Max | Median | IQR |
| Young adolescents | 1 | 6 | 5 | 0.75 |
| Mid-adolescents | 1 | 6 | 5 | 2.00 |
| Adults | 1 | 6 | 5 | 1.75 |
Note. SES = socio-economic status; IQR = interquartile range; IQ was measured by matrix reasoning tests (Wechsler, 1999); SES was measured by parental education for all age groups. Parental education is a robust indicator of SES (Dubow et al., 2009). SES scores: 1 = 1 + O levels/ CSEs/GCSEs; 2 = 5 + O levels/CSEs/CSEs; 3 = 1 + A levels/AS levels; 4 = 3 + A levels/AS levels; 5 = First Degree (e.g. BA, BSc); 6 = Higher Degree (e.g. MA, PhD).