<p>The theory of mind (ToM), working memory (WM) and inhibition, as well as their relationship, were evaluated in a sample of 28 children aged 3-4 years, belonging to a governmental childcare institution in Sincelejo, Colombia. Seven tasks of the BANPE test were applied. Slight alterations were identified in 70% of 4-year-old children in ToM and MT, as well as slight or severe alteration in inhibition in 50% of 3-year-old children and in 10% of 4-year old children. The delayed cognitive development of the population may be associated with its low socioeconomic status, being its assistance to the childcare institution insufficient as a protection factor. Likewise, significant associations were only found between MT and inhibition (<em>r</em>=0.397).</p>