People who have social power are strongly influenced by internal body cues stemming from their motor system when making judgments about preferences of paintings, objects, movements or letter sequences, according to a new paper in the Journal of Experimental Psychology: General which looked at how the easiness of high power individuals' motor actions impacted their judgments.

The findings are based on four experiments in which almost 400 people participated. In the experiments people wrote about situations in which they had power over someone else or in which someone else had power over them. Each experiment then targeted a different motor action. For example, one experiment trained people's extra ocular muscles - the muscles that move the eyes - to later see specific movements of a dot on a screen. When the eye muscles were trained to see the movement (and thus when perception was easy), the movement was liked more than when the muscles were not trained to see the movement (and thus when perception was more difficult).

However, this was only the case for people in the powerful group, not for people in the powerless group: they liked all movements equally well. In another experiment people had to say how much they like letter dyads that are typed with two fingers from different hands (e.g., FJ) compared to letter dyads that are typed with the same finger from the same hand (e.g., FV). Letter dyads typed with two fingers from different hands are easier to type - and powerful, but not powerless participants indeed liked them more.

Dr Karl-Andrew Woltin from the Department of Psychology at Royal Holloway, who led the studies, said, "There is more and more evidence that the powerful more strongly rely on internal cues when making judgments. Our research shows this for motor cues and preference judgments, but other research has also found the powerful to more strongly rely on other internal cues. For example, feelings of hunger predicts the amount of food eaten by powerful but not by powerless individuals; and feelings of easiness or difficulty associated with memory impacts judgments of powerful but not powerless individuals.

"Together with these findings, our research suggests that the powerful more strongly rely on gut feelings and internal cues when they make judgments about what they like, what is true, and what they should do. Sometimes it is good to be in touch with your feelings. But sometimes this can lead people astray and result in suboptimal judgments."

"We need to make sure that the power holders at various levels - be it in organisations or in politics - are aware of this potential bias so that they can counteract it if necessary," says Dr. Guinote, a c0-author of the paper.

Dr Woltin concluded: "Our findings suggest that mechanisms need to be put into place that make sure power holders do not favor internal cues over other information available to them when they make important decisions."