The assessment of social intimacy.

Research exploring the psychological importance of closeness with others has been hampered by the absence of a reliable and valid measure of this variable. The development of the Miller Social Intimacy Scale (MSIS), a 17-item measure of the maximum level of intimacy currently experienced, is presented. Evidence for internal consistency and test-retest reliability as well as for convergent, discriminant and construct validity is discussed in the context of the need for further scientific exploration of this important phenomenon.