Sentence comprehension can not adequately be characterized in terms of syntactic features alone, even when considering young children's comprehension, and only simple, easily comprehended sentences. The current study describes a means of characterizing one of many semantic aspects of comprehension (referred to as “Necessity for Linking”). This semantic aspect is then used to experimentally clarify sentence processing results that are ambiguous at the syntactic level. © 1978, SAGE Publications. All rights reserved.