Social learning about construction behaviour via an artefact.

3 a); this effect was marginally significant (GLM: \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\chi ^2}$$\end{document} χ 2 = 3.45, n = 20, p = 0.063; Model 1).

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