Ovsiankina effect — defensible cousin of Zeigarnik: general tendency to RESUME interrupted tasks, confirmed by the 2025 Zeigarnik meta-analysis even as the memory claim failed
Summary
Claim: The Ovsiankina effect — the general tendency to resume interrupted tasks — was confirmed by the same 2025 meta-analysis (CORRECTION: 2025 meta-analysis (Nature, Humanities & Social Sciences Communications; 38 Zeigarnik studies) — NO overall memory advantage for unfinished tasks (Cohen's dz ≈ 0.15)) that failed the Zeigarnik memory claim.
Source: Ovsiankina (1928); Nature 2025 meta-analysis (above).
Confidence: Verified.
Why this matters for Candid: Defensible behavioural anchor for save-and-resume patterns in tools, and for partial-completion UX (showing a user "you're 4 of 7 fields in" pulls them back). Pair with Kivetz, Urminsky & Zheng (2006), Journal of Marketing Research — goal-gradient in consumer contexts: cafe loyalty stamps completed faster as customers neared reward; online raters persist longer near reward — both are real; the Zeigarnik memory claim is not.
Related entries
Referenced by (3)
- reference Research brief: why interactive tools deepen a business's relationship with its audience — a mechanism-level research package (June 2026) relates-to
- rule R2 — Design every multi-step tool for the goal gradient: visible progress + low interaction cost + start-state non-empty when possible depends-on
- rule R7 — Do NOT invoke the Zeigarnik memory claim in client conversations or content; use goal-gradient / Ovsiankina instead — the memory effect failed to replicate in 2025 meta-analysis depends-on