The answer is "reward theory of attraction".
The Reward theory of attraction says we like the individuals who like us and give us compensating encounters. Individuals that truly compensate us are individuals who solicit little from us consequently. For instance you may feel remunerated when somebody you are pulled in to all of a sudden grins at you. It is soliciting next to no from you to restore the grin to make that individual your companion.
A skill that would be useful for hockey players would be tackling. Very useful in hockey.
The correct answer is clinically insignificant
In this sense, there was no significant difference between patients who used placebo and those who did not.
Scientifically proven, the placebo effect is centered on the idea that the patient's expectations and beliefs can promote biological changes in favor of curing diseases. There are confirmations of results of improvements in different diseases with the use of inactive drugs or the simulation of a medical procedure.