<p>Comparison of Human Figure Drawings of 276 pairs of Mexican and North American lower class children matched for age, sex, and mental maturity showed significant differences in the types of Koppitz Emotional Indicators (Els) found on the drawings. The United States children included Els, which indicate anxiety, inadequacy, poor self-concept, resentment and aggression. The Mexican children showed timidity, immaturity, and concretist types of thinking, but these and other Els found are those often found in the drawings of brain-injured children, so that it is unclear whether these traits are culturally based or produced by neurological deficits stemming from dietary deficiencies.</p>