A new study by Professor of Psychology Martha Arterberry, Northwestern University’s Susan J. Hespos, Cole Walsh ’19, and Carolyn Daniels ’19 was published in the journal Infancy. The paper, “Integration of Thought and Action Continued: Scale Errors and Categorization in Toddlers,” explores the effect of weighted arms on toddler’s performance in problem-solving. “Weighting the arms did not affect error rates, in contrast to previous research showing that weights improved performance in search tasks,” states the abstract. “The findings are discussed in light of children’s difficulty in integrating perception, cognition, and action.”