Claims

About 80 percent of verbal test items were answered correctly by trainees who heard the best commentary without seeing the pictures

Claim · All claims
Evidence · 1 study · causal r1 · q2
Currency · newest study 1955 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? Trainees who merely heard the best commentary without seeing the pictures answered about 80 percent of test items based on facts presented in the film correctly. → Nelson 1955

Evidence

Nelson 1955

Nelson, H. E. and Vandermeer, A. W. (1955). The Relative Effectiveness of Differing Commentaries in an Animated Film on Elementary Meteorology. Technical Report SDC 269-7-43. https://eric.ed.gov/?id=ED016911

q2 · i? · causal · r1

A supplementary condition in which trainees heard the best commentary without seeing the pictures answered about 80 percent of fact-based test items correctly, showing "the sound track" carried much of the instructional effect.

"About 80 percent of the test items based on facts presented in the film were answered correctly by those trainees who merely heard the best commentary without seeing the pictures."

Discussion

Page metadata
Field Value
type claim
id audio-only-commentary-80-percent-verbal-items
title About 80 percent of verbal test items were answered correctly by trainees who heard the best commentary without seeing the pictures
description About 80 percent of verbal test items were answered correctly by trainees who heard the best commentary without seeing the pictures
status review
evidence_strength weak
newest_evidence 1955
generated by process:wiki-ingest on 2026-10-28
trust unverified — no one has confirmed this page's content
sources 1 — nelson-1955

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