Higher internal disequilibrium is associated with more regressive (minus) changes as well as more progressive changes¶

Claim · All claims
Evidence · 1 study (2 entries) · causal r1–r2 · q2 · i1 small
Currency · newest study 1975 · not yet checked against its sources · not reviewed by a person
Evidence quality · No study behind this claim is a peer-reviewed article with a DOI: it rests on an ERIC document (a report, conference paper or thesis). It is kept because a design page cites it; treat it as a lead to check, not an established finding.

Subclaims¶

q2 i1 High mix subjects made significantly more minus (regressive) changes from pretest to posttest than mid and low mix subjects combined. → Snyder 1975 q2 i? Higher mixture was associated with more total raw change (fewer unchanged responses) from pretest to posttest. → Snyder 1975 (2)

Evidence¶

Snyder 1975¶

Snyder, S. S. & Feldman, D. H. (1975). An Experimental Test of the Effects of Internal and External Disequilibrium on Spatial Reasoning Development. https://eric.ed.gov/?id=ED118211

q2 · i1 · causal · r2

Post hoc item-by-item analysis of concept/feature score changes found a significant Level Mixture effect on the ratio of minus changes to total changes (F2,54=4.98, p<.01). "high mix subjech'made more minus changes as compared to mid and low mix subjects combined" (F1,54=7.59, p<.01).

"high mix subjech'made more minus changes as compared to mid and low mix subjects combined"

Snyder 1975 (2)¶

Snyder, S. S. & Feldman, D. H. (1975). An Experimental Test of the Effects of Internal and External Disequilibrium on Spatial Reasoning Development. https://eric.ed.gov/?id=ED118211

q2 · i? · the article prints no effect size for this finding · causal · r1

Analysis of variance on the ratio of total changes (plus and minus) to total responses showed a significant Level Mixture main effect (F=5.17). "Highermixture was associated with more rawchange, i.e. fewer responses remained unchangedfrom pretest to posttest."

"Highermixture was associated with more rawchange, i.e. fewer responses remained unchangedfrom pretest to posttest"

Discussion¶

Related Claims¶

• One-level and two-level external disequilibrium conditions did not differ significantly, and all Modal Level advances occurred to exactly one level above the subject's mode — the general claim this finding bears on, with the studies behind it
• External disequilibrium level systematically influences subsequent changes in internal disequilibrium: discrepant conditions increase mixture among low mix subjects and decrease it among high mix subjects — related
• Higher internal disequilibrium (Level Mixture) predicts Modal Level advance but not Map Drawing Mean improvement — related