22. These techniques included peer debriefings (Lincoln & Guba, 1985), theoretical memos (Strauss & Corbin, 1990), theoretical triangulation (Patton, 1990), pattern matching (Yin, 1989, 1993), investigator triangulation (Eisenhardt, 1989), data displays (Miles & Huberman, 1994), and comparison to the literature (Glaser & Strauss, 1967).