Løvoll & Vittersø (2014), Social Indicators Research — neither flow indicator peaked at balance; supports an IMBALANCE model; Engeser-Rheinberg 2008 also found balance not always optimal

Summary

Claim: Løvoll & Vittersø (2014), Social Indicators Research found neither flow indicator peaked at challenge-skill balance; they support an imbalance model. Engeser & Rheinberg (2008) found flow not always optimised by balance. Challenge-enjoyment relations are unstable across people and activities (Abuhamdeh & Csikszentmihalyi).

Source: Løvoll & Vittersø (2014), SIR; Engeser & Rheinberg (2008).

Confidence: Verified (limit).

Caveat: Sits alongside Fong et al.'s (2015) meta-analytic finding of a moderate balance-flow link (Fong, Zaleski & Leach (2015), Journal of Positive Psychology (28 studies meta) — challenge-skill balance to flow is MODERATE; clear goals + sense of control also robust antecedents) — the antecedent matters but is not the decisive switch the early theory implied.

Why this matters for Candid: Strongest reason to lean on the clear-goal + immediate-feedback components rather than promising "challenge-skill balanced experience" to clients.