“…Others study the relationship between the “family‐as‐a‐unit” (or the “couple‐as‐a‐unit”) and the “individual‐as‐a‐unit” (e.g., Reiss [177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187] and Bauman and Roman [21]). Still others concentrate on the “family‐as‐a‐system” (e.g., Haley [97, 98, 99, 100, 101] and Jackson [115, 117]). Other studies are designed to operationalize and test empirically some existing concept or theory, for example Sojit's [226, 227] attempt to operationalize the double‐bind theory or Cheek's [50, 51, 52, 53, 54, 55] efforts to operationalize Parson's theoretical framework.…”