FIRO-B® is a personality instrument that measures how you typically behave with other people and how you expect them to act toward you. Will Schultz developed the instrument in the late 1950s on the theory that beyond our needs for survival, food, shelter, and warmth, we each have unique interpersonal needs that strongly motivate us. These needs relate to areas he called inclusion, control, and affection. Schultz's overall aim was to construct a measure of how an individual acts in interpersonal situations and construct a measure that leads to overall prediction of interactions between people based on FIRO-B® data.