"refers to researchers' assignment of participants to groups by chance, to reduce the likelihood that an experiment's results will be due to preexisting differences between groups."
true/false

Random assignment

Explanation:

This is when a researcher randomly assigns participants to groups randomly and without any preference or bias, in order to reduce the probability of the result being influenced by preexisting variation between groups. Hence if the question above asks if random assignment "refers to researcher'" as stated, then the answer is True.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.