“…Fourth, we employ an innovative methodological approach that allows us to investigate our research questions using data from approximately 50 years of negotiation research (353 studies from 289 articles for joint gains and 195 studies from 171 articles for impasse rates; see the Literature Search and Eligibility Coding section). Because we included studies using negotiation tasks with different settings (e.g., joint-venture negotiations, e.g., Beersma & De Dreu, 2003; job negotiations, e.g., Schaerer et al, 2018; buyer–seller negotiations; e.g., Bazerman et al, 1985), various numbers of issues (i.e., 2–11 issues, e.g., Kray et al, 2004; Milter et al, 1996), and diverse samples (e.g., undergraduates, MBA students, practitioners) from different cultural contexts (e.g., America, Europe, Asia; e.g., Brett & Okumura, 1998; Gelfand et al, 2013; Graham, 1993), our findings are more generalizable compared to findings derived from a single study using one type of task and sample. Finally, we seek to offer negotiation practitioners empirically validated advice regarding whether they should bring more issues to the bargaining table to expand the pie or reduce the number of issues to avoid spoiling the cake .…”