Food liking, familiarity and expected satiation selectively influence portion size estimation of snacks and caloric beverages in men

We explored the relationship between three food attributes and portion size estimation. Twenty-seven men rated liking, familiarity and expected satiation (ES) of a chocolate bar, muffin, banana, cola, cornflakes, potato chips (crisps), hot chocolate drink and ice-cream, before estimating portion size when hungry and full. Portion estimates correlated with liking ratings in three foods (r = −0.53 to 0.28); with familiarity in two foods (r = −0.30, full only); and with ES in four foods (r ≤ 0.45). Across foods lower ES ratings tended to correlate with higher portion size estimates. Portion size estimation is influenced by food liking, familiarity and expected satiation.