@cite{hartshorne-etal-2016} — Empirical Data #
@cite{hartshorne-etal-2016}
Psych verbs, the linking problem, and the acquisition of language. Cognition 157: 268–288.
Core empirical claim #
The experiencer-subject / experiencer-object split maps onto a semantic distinction between habitual attitudes and caused emotional episodes:
| Verb class | Semantic type | Example |
|---|---|---|
| Fear-type (Class I, exp-subj) | Habitual attitude | "Mary fears spiders" |
| Frighten-type (Class II, exp-obj) | Caused emotional episode | "Spiders frighten Mary" |
This is diagnosed by three empirical properties:
- Duration: attitudes are longer-lasting than episodes
- Causation: episodes encode causal responsibility of stimulus; attitudes do not
- Cross-linguistic: the mapping holds in English, Mandarin, Korean, Japanese
Semantic structures (Fig. 11) #
- Attitudes: BE(experiencer, emotional_state ABOUT target)
- Episodes: CAUSE(stimulus, BECOME(experiencer, emotional_state))
Linking mechanism (Section 5.4.1) #
Prominence preservation: the highest argument in the semantic structure maps to subject. For attitudes, experiencer is the argument of BE (the main predicate), so it is highest → subject. For episodes, stimulus is the argument of CAUSE (the outermost predicate), so it is highest → subject.
Studies #
| Study | Language | Population | Finding |
|---|---|---|---|
| 1 | English | Adults | Fear-type rated longer duration |
| 2–4 | English, Mandarin, Korean, Japanese | Adults | Frighten-type rated higher causation |
| 5 | English | Adults (novel verbs) | Generalization to nonce verbs |
| 6–7 | Japanese | Adults (novel verbs) | Generalization + morphological cue |
| 8 | Russian | Adults (novel verbs) | Generalization cross-linguistically |
| 9 | English | Children (4–5 y.o.) | Early emergence of the distinction |
The two semantic types for psych verbs (@cite{hartshorne-etal-2016}, Fig. 11).
This is the paper's central theoretical claim: psych verb classes correspond to distinct semantic types, not merely different linking patterns.
- habitualAttitude : SemanticType
BE(experiencer, emotional_state ABOUT target). Enduring psychological state directed at a target.
- causedEpisode : SemanticType
CAUSE(stimulus, BECOME(experiencer, emotional_state)). Specific instance where a stimulus causes an emotion.
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Map B&R class to Hartshorne et al.'s semantic type.
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.PsychVerbClass.toSemanticType Phenomena.PsychVerbs.Data.PsychVerbClass.classIII = none
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Map Class II reading to semantic type. Eventive Class II = caused episode (clear mapping). Stative Class II does not cleanly map to either Hartshorne category: stative frighten-type verbs ("concern", "bore") still encode stimulus causation (unlike attitudes) but have longer duration than eventive Class II (p. 273: avg 3.7 vs 2.9 vs fear-type 5.2).
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.ClassIIReading.toSemanticType Phenomena.PsychVerbs.Data.ClassIIReading.stative = none
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Properties that distinguish the two semantic types empirically.
- longerDuration : Bool
Does the verb encode longer duration? Attitudes = true (enduring), episodes = false (transient).
- stimulusCausal : Bool
Does the verb encode causal responsibility of the stimulus? Episodes = true (CAUSE), attitudes = false (no CAUSE).
- involvesBecome : Bool
Does the verb involve a transition (BECOME)? Episodes = true (BECOME), attitudes = false (BE).
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.instBEqSemanticTypeProfile.beq x✝¹ x✝ = false
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Profile for habitual attitudes (fear-type). Long duration, no causal responsibility, no transition.
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Profile for caused emotional episodes (frighten-type). Short duration, causal responsibility, involves transition.
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The two profiles differ on every dimension.
Map semantic type to its expected profile.
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.SemanticType.habitualAttitude.expectedProfile = Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.attitudeProfile
- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.SemanticType.causedEpisode.expectedProfile = Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.episodeProfile
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The structurally prominent role in each semantic type (Section 5.4.1).
In the attitude structure BE(experiencer, state ABOUT target), experiencer is the highest argument (argument of the main predicate BE).
In the episode structure CAUSE(stimulus, BECOME(experiencer, state)), stimulus is the highest argument (argument of the outermost predicate CAUSE).
This determines linking via prominence preservation: the highest argument maps to subject position.
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Prominence preservation (@cite{hartshorne-etal-2016}, Section 5.4.1): the most prominent argument in the semantic decomposition becomes the subject. This is the paper's central theoretical claim about HOW semantic type determines argument structure.
The predicted subject role from prominence matches the observed Belletti & Rizzi class pattern: Class I → experiencer-subject, Class II → stimulus-subject.
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Cross-linguistic replication datum: the attitude/episode distinction holds in each language tested.
- language : Language
- fearLongerDuration : Bool
Do fear-type verbs rate higher on duration than frighten-type?
- frightenMoreCausal : Bool
Do frighten-type verbs rate higher on causation than fear-type?
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.instBEqCrossLinguisticDatum.beq x✝¹ x✝ = false
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Cross-linguistic data: all four languages show the same pattern. Experiments 1–4, summarized in Fig. 7–8.
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The attitude/episode distinction is universal across tested languages.
A generalization experiment: does the semantic type distinction guide argument structure assignment for novel (nonce) verbs?
- language : Language
- isChildPopulation : Bool
- attitudePredictExpSubj : Bool
Attitude semantics → experiencer-subject preference?
- episodePredictExpObj : Bool
Episode semantics → experiencer-object preference?
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.instBEqGeneralizationDatum.beq x✝¹ x✝ = false
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Generalization data from Experiments 5–9. Adults and children use the semantic type distinction to determine argument structure for novel verbs across languages.
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All generalization experiments show the predicted pattern.
The distinction emerges early in development (4–5 y.o.).
A psych verb datum from Hartshorne et al.'s norming studies.
- verb : String
- semanticType : SemanticType
- brClass : Data.PsychVerbClass
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.instBEqVerbDatum.beq x✝¹ x✝ = false
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Representative verb data from @cite{hartshorne-etal-2016}. Fear-type verbs are habitual attitudes, frighten-type are caused episodes.
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All fear-type verbs in the data are habitual attitudes.
All frighten-type verbs in the data are caused episodes.
The class–type mapping is perfect: no verb has a mismatched type.
Map Hartshorne et al.'s semantic type to Kim's CausalSource. Habitual attitudes = internal (mental representation maintains state); caused episodes = external (percept triggers state change).
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Map Kim's CausalSource back to semantic type.
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Roundtrip: SemanticType → CausalSource → SemanticType.
Roundtrip: CausalSource → SemanticType → CausalSource.
Derive the expected empirical profile from CausalSource.
- External: short duration (episode), causal stimulus, involves BECOME
- Internal: long duration (attitude), no causal stimulus, no BECOME
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- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.causalSourceToProfile Semantics.Causation.PsychCausation.CausalSource.external = Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.episodeProfile
- Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.causalSourceToProfile Semantics.Causation.PsychCausation.CausalSource.internal = Phenomena.PsychVerbs.Studies.HartshorneEtAl2016.attitudeProfile
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Duration: internal source → longer duration (enduring attitude).
Duration: external source → shorter duration (transient episode).
Causation: external source → stimulus is causal.
Causation: internal source → stimulus not causal.
Transition: external source → involves BECOME.
Transition: internal source → no BECOME.
The two causal sources predict opposite empirical profiles.
The profile derived via CausalSource agrees with the profile derived directly from SemanticType. This is non-trivial: we defined the two mappings independently and they agree.
External source predicts transition (BECOME).
Internal source predicts no transition.
Consistency: PsychCausalLink's transition prediction agrees with the empirical profile derived from SemanticType. Both are derived independently — the agreement is a genuine check.