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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: Child Dev. 2018 Jul 10;90(6):e849–e867. doi: 10.1111/cdev.13116

Table 1.

Descriptive Statistics for Daily Measurements.

Intensity of
Daily Academic Stressors
Cortisol (nmol/l) Negative Stress Threat Appraisals Negative
Intelligence Attributions
N Mean SD N Mean SD N Mean SD N Mean SD N Mean SD
All days 3,698 1.93 (1.07) 3,045 7.05 (7.40) 3,853 4.87 (2.57) 3,854 3.86 (2.25) 3,623 1.74 (1.07)
Day 1 (Mon/Tue) 324 2.04 (1.11) 369 8.49 (7.71) 501 5.11 (2.46) 501 4.27 (2.37) 315 2.01 (1.09)
Day 2 (Mon) 513 1.82 (1.05) 351 8.69 (7.46) 511 4.86 (2.47) 510 3.91 (2.25) 502 1.92 (1.11)
Day 3 (Tue) 510 1.96 (1.07) 377 7.98 (6.09) 503 4.65 (2.53) 505 3.94 (2.29) 498 1.86 (1.09)
Day 4 (Wed) 509 1.97 (1.06) 373 7.77 (6.56) 504 4.77 (2.59) 505 3.64 (2.22) 499 1.76 (1.06)
Day 5 (Thu) 507 1.88 (1.06) 371 7.31 (6.62) 503 4.88 (2.63) 502 3.80 (2.31) 492 1.74 (1.01)
Day 6 (Fri) 484 1.85 (1.09) 351 7.72 (7.15) 481 4.41 (2.66) 480 3.52 (2.30) 467 1.72 (1.11)
Day 7 (Mon) 184 2.03 (1.05) 185 5.54 (9.00) 184 5.26 (2.56) 184 3.88 (2.06) 184 1.47 (1.04)
Day 8 (Tue) 170 2.01 (1.09) 171 3.11 (2.45) 170 5.53 (2.62) 170 4.08 (2.15) 170 1.54 (1.03)
Day 9 (Wed) 168 1.86 (1.05) 169 4.77 (13.70) 167 5.52 (2.64) 168 4.02 (1.99) 167 1.40 (0.84)
Day 10 (Thu) 166 2.03 (1.08) 169 5.00 (4.74) 166 4.97 (2.51) 166 3.69 (1.88) 166 1.49 (0.98)
Day 11 (Fri) 163 1.97 (1.12) 159 4.71 (3.69) 163 4.67 (2.50) 163 3.81 (2.13) 163 1.48 (1.07)

Note: N= Number of observations. Intensity of daily academic stressors indicate the average intensity (1=Not at all negative ~ 4= Extremely negative) of up to three negative academic events reported in daily survey. Cortisol (nmol/l) raw means and standard deviations are reported, per day. Missing data occurred due to different consent processes used between self-reports and hormone collection in School 1; and also excused/unexcused absences, conflicts with course schedules or school events for some students, or voluntary withdrawal.