Outliers: The Story of Success · chapter 9 · id outliers-c9-05-the-summer-slide-research-that
“The 'summer slide' research that Gladwell relies on -- primarily Alexander, Entwisle & Olson's Baltimore Beginning School Study -- used data from 790 children and found two-thirds of the ninth-grade reading achievement gap was traceable to differential summer learning in elementary school.”
TRUE, BUTconfidence: medium⚠ extracted by pipeline, re-audit pending
Receipts
Alexander, Entwisle & Olson (2007), American Sociological Review: Lasting Consequences of the Summer Learning Gappaywalled · manual check queued
Two-thirds of the ninth-grade reading achievement gap between lower and upper SES students was attributable to differences in summer learning experiences during elementary school.
Alexander et al. (2007), New Directions for Youth Developmentpaywalled · manual check queued
Using data from the Baltimore Beginning School Study, a representative random sample of 790 school children whose educational progress was monitored from first grade through age 22.
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