
This relatively small study (beginning with 121 people and ending with 64) called for participants to complete a questionnaire five times a day for 21 days assessing their hunger levels, irritability, and anger. Participants were also asked to provide information on their emotional state, discussing pleasure and arousal (in the sense of how awake they were feeling) in relation to when each person had consumed their last meal.
Authors of the study also factored in relationship status, BMI, geographic location, age, and a number of other practical pieces when weighing the data. “Furthermore, we asked several questions about their eating behaviours over the previous three weeks (e.g., frequency of main meals, snacking behaviour, healthy eating, feeling hungry, sense of satiety),” they explained.