... Even with very minimal amounts of information--for example, with initial impressions of personality based on less than five min-utes of interaction or observation--judges can achieve statistically significant levels of accuracy (Ambady & Rosenthal, 1992), especially for more visible personality traits such as Extraversion (Borkenau, Brecke, Möttig, & Paelecke, 2009;Borkenau, Mauer, Riemann, Spinath, & Angleitner, 2004;Funder & Dobroth, 1987;John & Robins, 1993;Paunonen, 1989). However, there is evidence that these trait visibility effects tend to diminish or disappear among well-acquainted pairs (McDonald & Letzring, 2016;Paunonen, 1989). In fact, well-acquainted individuals can accurately judge most major dimensions of personality and tend to do so with higher levels of accuracy than are found in first impressions, which has been labeled the acquaintanceship effect (Bernieri, Zuckerman, Koestner, & Rosenthal, 1994;Colvin & Funder, 1991;Funder & Colvin, 1988;Funder, Kolar, & Blackman, 1995;Kenny, Albright, Malloy, & Kashy, 1994). ...