Preschool science experiment: Using ice to teach kids about scientific concepts (with crucial safety tips)

preschool boy carefully removing ice tray from freezer

© 2008 – 2021 Gwen Dewar, Ph.D., all rights reserved A preschool science experiment is an opportunity to introduce children to the concepts of observation, prediction, and testing (Gelman and Brenneman 2004). Exciting? Yes. But it’s also tricky. On the one hand, research suggests that young children don’t think as creatively or as critically when … Continue reading

What’s the right age to start potty training? It depends on your goals

toddler lifts the lid of a toilet

© 2021 Gwen Dewar, all rights reserved In Western countries like the United States, many children begin toilet training sometime between 24 and 36 months.  But from an historical and cross-cultural standpoint, this timing is very late, and it comes with a downside. So what’s the right potty training age? It depends on your child, … Continue reading

When does peer pressure start? Early. Very early in life.

long line of identical yellow rubber ducks

Peer pressure and social conformity starts long before adolescence. When faced with a choice between telling the truth and backing a popular falsehood, even 4-year-old children will buckle. Yet kids also possess the ability to question — and even reject — majority opinion. What can we do to encourage children to think for themselves? You … Continue reading

“Fast-track” toilet training techniques: An evidence-based review

kid sitting on potty chair outside, seen from waist down

“Fast track” toilet training techniques can be effective, but they aren’t right for everyone. Children shouldn’t begin unless they are healthy, motivated, and developmentally ready. And caregivers must be prepared to coach their children through hours of intensive, focused training.

Critical thinking in children: Are we teaching our kids to be dumb?

© 2008 – 2019 Gwen Dewar, Ph.D., all rights reserved In his review of the research, Stephen Norris notes that critical thinking in children is uncommon: “Most students do not score well on tests that measure ability to recognize assumptions, evaluate arguments, and appraise inferences” (Norris 1985). Why is critical thinking so difficult? Some argue … Continue reading

Preschool social skills references

These sources are cited in my article about preschool social skills. Bakermans-Kranenburg MJ, Van IJzendoorn MH, Pijlman FT, Mesman J, Juffer F. 2008. Experimental evidence for differential susceptibility: dopamine D4 receptor polymorphism (DRD4 VNTR) moderates intervention effects on toddlers’ externalizing behavior in a randomized controlled trial. Dev Psychol. 44(1):293-300. Bakermans-Kranenburg MJ, van Ijzendoorn MH. 2011. … Continue reading

The diaper alarm: An effective tool for toilet training?

© 2017 Gwen Dewar, Ph.D., all rights reserved The musical diaper alarm Considering all the claims and hype, there haven’t been many good experimental tests of potty training techniques. But Alexandra Vermandel and her colleagues are trying to change that. They’ve wondered if they could speed up potty training by using a diaper alarm–a device … Continue reading

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