Compound words are formed by combining free lexemes into a single lexicalized expression. Few rules govern this lexical-conceptual "evolution." In English, lexicographers find new compounds by examining popular usage-that is, words used together relatively often to denote a specific concept. Most compounds become "solid"-that is, are written as spatially unified expressions-but others are written with a blank space between the lexeme constituents or are hyphenated. One central question in the study of compound recognition has been whether the spatial and conceptual unification of solid compounds is reversed during the recognition process-that is, whether the constituents of the comp pound are discerned and accessed before the overall word is recognized. The bulk of the available empirical evidence indicates that such decomposition indeed takes place.Experimental effects of compound decomposition have b been obtained when either individually presented compound words or words related to compound word primes were to b be named or classified (see, e.g., Coolen, van Jaarsveld, & Schreuder, 1991, 1993Inhoff & Topolski, 1994;Laudanna, Badecker, & Caramazza, 1989;Libben, Derwing, & de Almeida, 1999;Lima & Pollatsek, 1983;Prinzmetal, 1990;Prinzmetal, Hoffman, & Vest, 1991;Sandra, 1990;Shillcock, 1990;Taft, 1985;Taft & Forster, 1976;van Jaarsveld & Rattink, 1988;Zwitserlood, 1994). Decompositional effects have also been obtained when compound words were viewed during sentence reading (Andrews, Miller, & Rayner, 2004;Bertram & Hyönä, 2003;Hyönä & Pollatsek, 1998;Inhoff, Briihl, & Schwartz, 1996;Inhoff, Radach, & Heller, 2000;Juhasz, 2007;Juhasz, Inhoff, & Rayner, 2005;Juhasz, Starr, Inhoff, & Placke, 2003;Pollatsek, Hyönä, & Bertram, 2000). In Hyönä and Pollatsek's influential study, readers spent less time viewing spatially unified Finnish compounds with high-frequency beginning lexemes than viewing matched compounds with low-frequency beginning lexemes. The frequency of the beginning lexeme influenced compound reading at a relatively early stage; d that is, the first-fixation duration was shorter when a solid compound contained a high-frequency beginning lexeme. A follow-up study, Pollatsek et d al. (2000), further showed that both the word frequency of the second lexeme and the frequency of the full compound word influenced compound viewing and that these two frequency effects emerged at approximately the same time, after the first fixation on a com r -pound word. Readers thus discern the constituent lexemes of spatially unified long Finnish compound words and use these lexemes progressively in a time-locked manner.Decomposition of compound words may assist the accessing of orthographic word forms. The orthographic form of a constituent lexeme is less complex and is generally much more common and familiar than the orthot graphic form of the full compound. Lexical search that proceeds from relatively simple and familiar lexeme forms to the full compound form could thus be more effective than lexical search using only the...