The book Motivated Minds ​ — Raising Children to Love Learning makes the following observation: “Researchers have shown decisively that when children study because they enjoy it, their learning is deeper, richer, and longer lasting.
Raamatus „Motivated Minds – Raising Children to Love Learning ” täheldatakse järgmist:„ Teadlastel on kindlaid tõendeid, et kui lapsed õpivad meeleldi, omandavad nad õpitava põhjalikumalt, tulemusrikkamalt ning püsivamalt.