Claims

The number of items groups placed in their representations was negatively correlated with the average quality of those items.

Claim · All claims
Evidence · 1 study · associational r1 · q3 · i3 large
Currency · newest study 2008 · 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.

q3 i3 Including more items in a representation was associated with significantly lower average item quality (r = -.66). → Jeroen Janssen 2008

Evidence

Jeroen Janssen 2008

Jeroen Janssen, Gijsbert Erkens, Paul A. Kirschner, Gellof Kanselaar. (2008). Effects of representational guidance during computer-supported collaborative learning. Instructional Science. https://doi.org/10.1007/s11251-008-9078-1

q3 · i3 · associational · r1

Correlational analysis of the group-level representation data from the same 39-group study; the article reports "a significantly negative correlation, r =- .66, p = .00" between number of items and average item quality.

"Additionally, we correlated the number of items produced with the average quality of these items and found a significantly negative correlation, r =- .66, p = .00, meaning that when groups attempted to included a large number of items in their representations, this had a negative effect on the quality of their representations."

Discussion

Page metadata
Field Value
type claim
id item-quantity-quality-tradeoff-representations
title The number of items groups placed in their representations was negatively correlated with the average quality of those items.
description The number of items groups placed in their representations was negatively correlated with the average quality of those items.
status review
evidence_strength moderate
newest_evidence 2008
generated by process:wiki-ingest on 2026-10-18
trust unverified — no one has confirmed this page's content
sources 1 — jeroen-janssen-2008

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