Number of participants and percentage (in parentheses) of each second-order false belief (FBT_2) score.

<p>Number of participants and percentage (in parentheses) of each second-order false belief (FBT_2) score.</p

Picture used in the second-order relative clause task (REL_2).

<p>“In which picture is there a sheep that is pushing a monkey that is pushing a sheep?” Adapted from Özge et al. [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0169510#pone.0169510.ref068" target="_blank">68</a>] under a CC BY license, with permission from the authors.</p

Predicting second-order false belief task judgment and justifications scores for both younger (4–6) and older (6–8) age groups.

<p>Predicting second-order false belief task judgment and justifications scores for both younger (4–6) and older (6–8) age groups.</p

Examples of the progression of orders of recursion for theory of mind attributions and relative clauses.

<p>Examples of the progression of orders of recursion for theory of mind attributions and relative clauses.</p

Frequency (Freq.) and percentage (%) of each type of justification answers.

<p>Frequency (Freq.) and percentage (%) of each type of justification answers.</p

FINAL_data_PLOS_ONE.xls

Datase

Bivariate correlation coefficients (Spearman’s <i>r</i>_<i>s</i>) for the younger (4–6 years) and older (6–8 years) age groups.

<p>Bivariate correlation coefficients (Spearman’s <i>r</i>_<i>s</i>) for the younger (4–6 years) and older (6–8 years) age groups.</p

Model flowchart.

<p>Model flowchart.</p

Re-Caching in Experiment 1.

<p>Average proportion of caches re-cached, real birds <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0032904#pone.0032904-Emery1" target="_blank">[8]</a> and ‘virtual birds’, with standard errors. Panel A: Alternating ‘watched’ and ‘in private’ trials. Panel B: At recovery, ‘watched’ and ‘in private’ trays presented together.</p

Model variables.

<p>Model variables.</p