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The Effects of Spaced Practice on Second Language Learning: A Meta-Analysis

Kim & Webb 2022 · review pooling many studies (meta-analysis) · touches 1 claim · used in 1 attack

Which beliefs it touches

C23 Spaced L2 practice sets a limit on it
Full text (2026-11-05): spaced beat massed on delayed tests, g = 0.80 (vocabulary 1.15, grammar 0.11 ns); longer beat shorter spacing on delayed tests 0.40, but within one session 0.76 vs between sessions 0.18 ns, adults 0.54 vs school-age −0.04. Supports the vocabulary core; weakened C23 2026-11-05.