Pairwise relationships between invested mental effort, perceived task difficulty, interest, and self-assessed understanding fluctuate across measurement points, with most correlations stronger when more content knowledge is presented¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Some variable pairs show predominantly stable relationships while others show no stable correlation, and many correlations are stronger in sections introducing new content knowledge than in introductory sections. → Katrin Schuessler 2026

Evidence¶

Katrin Schuessler 2026¶

Katrin Schuessler, Jenna Koenen, Elke Sumfleth, Marvin Rost. (2026). Variations in Repeated Measures of Cognitive Load and Interest During Complex Learning Tasks. Educational Psychology Review. https://doi.org/10.1007/s10648-025-10105-4

q3 · i? · associational · r2

Pairwise correlations of raw data at each of the 21 measurement points (Fig. 10) in the N = 360 sample. The article adds that "many correlations are stronger in the sections where new content knowledge is introduced, compared to introductory sections"; no standardized effect size summarizes the fluctuation.

"This approach shows that some pairs of variables exhibit predominantly stable relationships (e.g. mental effort invested and perceived task difficulty, or self-assessed understanding and perceived task difficulty), while others appear to have no (stable) correlation (e.g. mental effort invested and self-assessed understanding)."

Discussion¶

Related Claims¶

• Perceived task difficulty correlates negatively with self-assessed understanding and with interest at essentially all measurement points, while interest and self-assessed understanding correlate positively throughout — related
• Invested mental effort and perceived task difficulty are significantly positively correlated at all measurement points except MP2.5, with correlations increasing as material complexity rises — related
• Invested mental effort and interest are only weakly and inconsistently positively correlated across measurement points, with some correlations non-significant — a narrower finding that bears on this claim
• The relationship between invested mental effort and self-assessed understanding is weak and inconsistent, with most correlations non-significant and mixed directions — a narrower finding that bears on this claim
• Cognitive load ratings rise and interest and self-assessed understanding fall in sections introducing new content knowledge compared with introductory sections of worked examples — related
• Repeated measures of invested mental effort, perceived task difficulty, interest, and self-assessed understanding differ significantly across measurement points within complex learning tasks and are not adequately represented by their mean — related
• Model-based posterior-prediction correlations between the four variables show distinct dynamic patterns across the 21 time points and four intervention groups — related
• Greater time and effort invested in the task correlate with better integration and smaller calibration error — related
• Invested mental effort and perceived task difficulty are strongly correlated yet relate differently to relative task difficulty, indicating the two ratings measure different aspects of overall cognitive load — related
• Mental effort is more suitably modeled as a non-linear than linear predictor of learning outcomes in most re-analyzed studies — related
• The model's assumed negative correlation between cognitive load and learner resources was not supported; the overall correlation was positive — related