DOI of Correction: http://dx.doi.org/10.1016/j.tics.2016.08.011
(Trends in Cognitive Sciences 20, 490–499; June 14, 2016)
Due to an error in the production process, an equation in the main text of this Opinion article was incorrectly rendered as “δ = ay2 − kδ” in the second paragraph of the section titled “The Model”. The correct equation is “δ̇ = ay2 − kδ”. This equation has now been corrected online and in the pdf. The correct sentence reads, “In the model, this change in the kick frequency is realized by an increase in the force driving the baby’s leg movement (the parameter δ in the limit cycle model) coupled to the mobile oscillator y with a dynamics described by δ̇ = ay2 − kδ.” We apologize to the readers for any confusion that the error may have caused.