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. 2026 Mar 17;17:1727489. doi: 10.3389/fpsyg.2026.1727489

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Copyright © 2026 Meloche, Zdebik, Lemelin and Pearson.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Line graph comparing four groups across fourteen IBQ-R temperament dimensions, with standard deviation on the y-axis and dimension labels along the x-axis. Data points for each group are connected by different line styles, and error bars are present for each point. Group means are listed in the table below the x-axis labels for each dimension. — Temperament profiles based on the 14 dimensions of the IBQ-R (short form) for 6-month-old children (N = 433). Profile 1: Moderate Reactivity and Regulation (37.67%); Profile 2: High Positivity-High Regulation (28.64%); Profile 3: High Negativity-Low Regulation (13.60%); Profile 4: High Positivity and Negativity (20.09%).