“…Subsequent research explored specific activities using Bryan's continuum and later expanded and altered the components used to measure the specialization continuum. Research included activities such as birding (Lee & Scott, 2004;McFarlane, 1994aMcFarlane, , 1994bMcFarlane, , 1996, canoeing (Kauffman & Graefe, 1984;, hunting (Kuentzel & Heberlein, 1992;Miller & Graefe, 2000), hiking and backpacking (Virden & Schreyer, 1988;Williams & Huffman, 1987), vehicle-based campers (McIntyre & Pigram, 1992), sailing and motor boating (Donnelly et al 1986), non-motorized whitewater watercraft users (Bricker & Kerstetter, 2000;Kuentzel & McDonald, 1992), mountaineering , bridge players (Scott & Godbey, 1994), and surfing (Farmer, 1992). Angling specialization also received considerable attention (Chipman & Helfrich, 1988;Choi, Loomis, & Ditton, 1994;Hase, 1996).…”