𝔖 Bobbio Scriptorium
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Adolescent substance use, sleep, and academic achievement: Evidence of harm due to caffeine

✍ Scribed by Jack E. James; Álfgeir Logi Kristjánsson; Inga Dóra Sigfúsdóttir


Book ID
116186037
Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
219 KB
Volume
34
Category
Article
ISSN
0140-1971

No coin nor oath required. For personal study only.


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## Abstract In studies of peer group behavior, the direct measure of peer group behavior is often not available, and so is replaced by perceptions from survey respondents. This study shows that regression estimators are inconsistent when the correctly measured independent variable of group behavior