This would be best explained by the framing effect. This is a type of bias in which people make decisions on subjects based on whether these are presented positively or negatively. When this happens, decision-makers place emphasis on the positive and negative connotations that accompany the descriptions rather than on the objective analysis of the information presented.
The correct answer to the question above would be "the neutral person." In negotiation, the mediator is the one who assists both parties who are in a form of alternative dispute resolution and negotiate a settlement.
It improve a you childs state of mind remebering the sahpe or the size of something and puzzle are fun and simple toys for toddlers and it gives them an early spark of education