Table 2.
Descriptive Data for Telomere and Temperament Variables
| M | SD | Range | n | % | |
|---|---|---|---|---|---|
|
| |||||
| Relative telomere length | |||||
| T1 (N = 545) | 1.27 | 0.21 | 0.24–1.96 | ||
| T2 (N = 254) | 1.15 | 0.21 | 0.70–1.96 | ||
| T3 (N = 313) | 1.12 | 0.18 | 0.70–1.84 | ||
| Temperament domain scores | |||||
| T1 (N = 545) | |||||
| Negative affectivity | 3.18 | 0.73 | 1.35–5.63 | ||
| Surgency/extraversion | 4.72 | 0.71 | 2.44–6.64 | ||
| Regulation/effortful control | 5.09 | 0.56 | 2.63–6.68 | ||
| T2 (N = 254) | |||||
| Negative affectivity | 2.83 | 0.49 | 1.76–4.43 | ||
| Surgency/extraversion | 4.93 | 0.55 | 3.62–6.54 | ||
| Regulation/effortful control | 4.83 | 0.53 | 2.94–6.15 | ||
| T3 (N = 313) | |||||
| Negative affectivity | 2.94 | 0.55 | 1.54–4.87 | ||
| Surgency/extraversion | 4.96 | 0.54 | 3.38–6.64 | ||
| Regulation/effortful control | 4.96 | 0.54 | 3.12–6.18 | ||
| Temperament profile groups | |||||
| EBR, T1 | 222 | 40.7 | |||
| EBD, T1 | 236 | 43.3 | |||
| IOC, T1 | 87 | 16.0 | |||
| EBR, T2 | 113 | 44.5 | |||
| EBD, T2 | 90 | 35.4 | |||
| IOC, T2 | 51 | 20.1 | |||
| EBR, T3 | 114 | 36.8 | |||
| EBD, T3 | 117 | 37.7 | |||
| IOC, T3 | 79 | 25.5 | |||
Note. T1 = Time 1 (infancy); T2 = Time 2 (age 2 years); T3 = Time 3 (age 3 years); EBR = emotionally and behaviorally regulated; EBD = emotionally and behaviorally dysregulated; IOC = introverted and overcontrolled. % = percent of sample with a given temperament profile among those with available temperament profile group data at the given time point.