A fluent English speaker finds 'She persuaded enthusiastically' awkward, even though it's a verb followed by an adverb — a legal grammatical pattern. What explains this?
AThe sentence is ungrammatical because adverbs cannot follow verbs in English
BThe word 'persuade' carries a negative connotation that conflicts with 'enthusiastically'
CThe subcategorization frame stored in 'persuade's' lexical entry requires a direct object and complement; an adverb alone cannot satisfy it, making the sentence feel incomplete
DThis is a pragmatic oddity — the sentence is grammatically fine but unusual in real contexts
Subcategorization frames are part of each verb's lexical entry and specify what complements the verb requires. 'Persuade' demands a direct object (a person) and typically a clausal complement or infinitive — 'I persuaded her to leave.' An adverb alone doesn't fill those slots. The result isn't ungrammatical in a formal sense, but feels broken because the frame is unsatisfied. This is distinct from a pragmatic issue — it stems directly from stored syntactic-semantic information in the lexical entry.
Question 2 Multiple Choice
A speaker experiencing a tip-of-the-tongue state for the word 'cathedral' produces 'catapult' and 'cafeteria' before recovering the target. What does this reveal about the mental lexicon?
AThe lexicon organizes words by semantic field — cathedrals, catapults, and cafeterias are conceptually related
BThe lexicon has a phonological dimension — words sharing onset sounds and stress patterns are linked and can be co-activated during retrieval
CThe lexicon organizes words by morphological family — all three words share a common root
DThe tip-of-the-tongue state indicates a disorder affecting words beginning with 'ca-'
Tip-of-the-tongue states are a window into lexical organization. The words retrieved are phonologically similar (same onset, similar stress and syllable count), not semantically related. 'Catapult' and 'cafeteria' are not in the same semantic field as 'cathedral,' but they share surface sound properties. This reveals that the mental lexicon has an independent phonological organizational layer, and accessing one phonological neighborhood can activate neighboring entries — even when the semantic properties of the target are fully known.
Question 3 True / False
A verb's selectional restrictions specify which syntactic structures it can appear in — for example, whether it takes a direct object or a complement clause.
TTrue
FFalse
Answer: False
Selectional restrictions are *semantic* constraints on the types of entities that can fill a verb's argument roles — 'devour' requires its patient to be something edible; 'elapse' requires a time subject. Syntactic structural requirements (which complements a verb can take) are encoded in subcategorization frames. The distinction matters because violating a subcategorization frame produces syntactic infelicity, while violating selectional restrictions produces semantic anomaly — which can often be rescued by metaphor ('She devoured the book') in a way that syntactic violations cannot.
Question 4 True / False
The mental lexicon encodes multiple types of information simultaneously for each word — phonological, morphological, syntactic, and semantic — all of which can influence how words are recognized and retrieved.
TTrue
FFalse
Answer: True
Psycholinguistic evidence from priming studies, tip-of-the-tongue states, and speech errors converges on a multi-dimensional view of the lexicon. Phonological priming (similar-sounding words speed each other's recognition), morphological priming (seeing 'run' speeds recognition of 'runner'), and semantic priming (seeing 'doctor' speeds recognition of 'nurse') all operate in parallel. The mental lexicon is not a dictionary indexed only by meaning — it is cross-indexed along all these dimensions simultaneously.
Question 5 Short Answer
What is the difference between subcategorization frames and selectional restrictions, and why does maintaining this distinction matter for understanding lexical knowledge?
Think about your answer, then reveal below.
Model answer: A subcategorization frame specifies the syntactic complements a verb requires — 'persuade' needs a direct object NP and a clausal complement or infinitive. Selectional restrictions specify semantic requirements on argument fillers — 'devour' requires its patient to be edible, 'elapse' requires a time-interval subject. The distinction matters because violations have different linguistic status: subcategorization violations produce syntactic infelicity ('She persuaded'), while selectional violations produce semantic anomaly ('She devoured the idea') — the latter is often interpretable as metaphor, the former typically cannot be rescued this way.
Both are encoded in lexical entries, but they operate at different levels. Subcategorization is a syntactic fact about a word's grammatical environment; selectional restrictions are semantic facts about the kinds of things that can participate in the event the verb describes. Understanding both helps explain how language processing is so fast and accurate: accessing a word immediately delivers not just its meaning but the full package of syntactic and semantic constraints that govern how it combines with surrounding material.