3.2.3. Sucrose perceived intensity ratings and the reinforcing value of food
When sucrose suprathresholds were examined, expectorated sucrose ratings at the two highest concentrations, 40 and 80 mg/100 ml, were significant predictors of breakpoint (β=−0.86 and β=−0.87; p= 0.039 and p= 0.028), with lower ratings of intensity associated with higher reinforcing value of food (Fig. 2A).
Perceived intensity ratings for swallowed sucrose at the same concentrations were not significant predictors of the reinforcing value of food nor were any of the other predictor variables (p> 0.5).