“…Furthermore, there are clear demonstrations that specific knowledge has a decisive role in skilled performance in such domains as chess (Chi, 1978), physics (Glaser & Chi, 1988), computer programming (Kulikowich & Alexander, 1990), and science fiction (Means & Voss, 1985). The most relevant observations to the issue at hand are that comprehension during reading has been shown to vary with the reader's familiarity with the specific content area of the text (e.g., FincherKiefer, Post, Greene, & Voss, 1988;Spilich, Vesonder, Chiesi, & Voss, 1979), with the reader's educational background (e.g., Anderson, Reynolds, Schallert, & Goetz, 1977;Birkmire, 1985), with both specific content and educational background (Ohlhausen & Roller, 1988), and with knowledge analogous to specific context (Alexander, Pate, & Kulikowich, 1989;Hayes & Tierney, 1982;Kulikowich & Alexander, 1990;Walker, 1987;Yekovich, Walker, Ogle, & Thompson, 1990).…”