“…We address these concerns by using the control function approach (Petrin & Train, 2010). As the exclusion instrument, we use the average level of buyer participation in the buyer's industry (defined per the four-digit NAICS code), excluding the buyer participation of the buyer firm itself (see, e.g., Han, Mittal, &Zhang, 2017, andPanagopoulos, Mullins, &Avramidis, 2018, for a similar practice). We expect the average industry-level buyer participation to be a strong instrument, as it is likely that a buyer's level of participation in an NPD project is similar to the participation level of its peers in the same industry, as they face the same market conditions (Germann, Ebbes, & Grewal, 2015).…”