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ERIC Number: EJ989061
Record Type: Journal
Publication Date: 2012-Dec
Pages: 7
Abstractor: As Provided
Reference Count: N/A
ISSN: ISSN-0272-7757
Peer Effects and Measurement Error: The Impact of Sampling Variation in School Survey Data (Evidence from PISA)
Micklewright, John; Schnepf, Sylke V.; Silva, Pedro N.
Economics of Education Review, v31 n6 p1136-1142 Dec 2012
Investigation of peer effects on achievement with sample survey data on schools may mean that only a random sample of the population of peers is observed for each individual. This generates measurement error in peer variables similar in form to the textbook case of errors-in-variables, resulting in the estimated peer group effects in an OLS regression model being biased towards zero. We investigate the problem using survey data for England from the Programme for International Student Assessment (PISA) linked to administrative microdata recording information for each PISA sample member's entire year cohort. We calculate a peer group measure based on these complete data and compare its use with a variable based on peers in just the PISA sample. We also use a Monte Carlo experiment to show how the extent of the attenuation bias rises as peer sample size falls. On average, the estimated peer effect is biased downwards by about one third when drawing a sample of peers of the size implied by the PISA survey design. (Contains 4 figures and 2 tables.)
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Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers - Location: United Kingdom (England)
Identifiers - Assessments and Surveys: Program for International Student Assessment