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In this work, we use question answering as a general framework for studying how eye movements in reading reflect the reader&#39;s goals, how they are pursued, and the extent to which they are achieved. We leverage fine-grained annotations of task-critical textual information to perform a detailed comparison of eye movements in information-seeking and ordinary reading regimes. We further examine how eye movements during information seeking relate to question answering behavior. We find that reading times, saccade patterns and sensitivity to the linguistic properties of the text are all strongly and systematically conditioned on the reading task, and further interact with question answering behavior. The observed reading patterns are consistent with a rational account of cognitive resource allocation during task-based reading.


CogSci 2023

Eye Movements in Information-Seeking Reading

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ACL 2025

Welcome to The 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025)

In this work, we use question answering as a general framework for studying how eye movements in reading reflect the reader's goals, how they are pursued, and the extent to which they are achieved. We leverage fine-grained annotations of task-critical textual information to perform a detailed comparison of eye movements in information-seeking and ordinary reading regimes. We further examine how eye movements during information seeking relate to question answering behavior. We find that reading times, saccade patterns and sensitivity to the linguistic properties of the text are all strongly and systematically conditioned on the reading task, and further interact with question answering behavior. The observed reading patterns are consistent with a rational account of cognitive resource allocation during task-based reading.


technical paper

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The 45th Annual Meeting of the Cognitive Science Society presents the latest research across cognitive science and highlights the theme of Cognition in Context.

Normative accounts of decision-making predict that people attempt to balance the immediate rewards associated with correct responses against the costs of deliberation. However, humans frequently deliberate longer than normative models say they should. We propose that people try to optimize not only their rate of material rewards, but also their rate of information gain. A computational model that implements this idea successfully mimics human decision makers, reproducing key patterns of behavior not predicted by alternative models. Moreover, simulations reveal a normative basis for our model: An agent that exchanges even a small amount of immediate reward for information will improve its decision-making ability through learning, allowing it to earn more reward in the long run than an agent disinterested in information. Maximizing a combination of reward and information rate is a simple yet effective strategy for solving the speed-accuracy tradeoff that may resolve lingering mysteries about human decision-making.

When to choose: Information seeking in the speed-accuracy tradeoff

Local coherence is a phenomenon in human sentence processing whereby word sequences within a sentence incur processing difficulty when they have a plausible reading different from their true syntactic structure as disambiguated by the global context. Prior research (Tabor, Galantucci, & Richardson, 2003) indicates that more plausible substrings incur more processing difficulty than less plausible ones. In the current article, we challenge this view by providing evidence from two experiments which show that local semantic plausibility can actually facilitate processing. We additionally test whether syntactic statistics can modulate local coherence effects, a prediction made by Lossy-Context Surprisal (LCS; Futrell, Levy, & Gibson, 2020; Hahn, Futrell, Levy, & Gibson, 2022). Although we do not find evidence for effects of embedding bias, our overall results cannot be fully explained by any existing account of local coherence alone. We discuss implications for theories of sentence processing.

How Do Syntactic Statistics and Semantic Plausibility Modulate Local Coherence Effects

Context changes expectations about upcoming words—following a story involving an anthropomorphic peanut, comprehenders expect the sentence the peanut was in love more than the peanut was salted, as indexed by N400 amplitude (Nieuwland & van Berkum, 2006). This updating of expectations has been explained using Situation Models—mental representations of a described event. However, recent work showing that N400 amplitude is predictable from distributional information alone raises the question whether situation models are necessary for these contextual effects. We model the results of Nieuwland and van Berkum (2006) using six computational language models and three sets of word vectors, none of which have explicit situation models or semantic grounding. We find that a subset of these can fully model the effect found by Nieuwland and van Berkum (2006). Thus, at least some processing effects normally explained through situation models may not in fact require explicit situation models.


Can Peanuts Fall in Love with Distributional Semantics?

We report a controlled study investigating the effect of visual information (i.e., seeing the speaker) on the spoken language comprehension. We compare the ERP signature (N400) associated to each word in audio-only and audio-visual presentations of the same verbal stimuli. We assess the extent to which surprisal measures (i.e., measures of how predictable words in their linguistic context) generated on the basis of different types of language models (n-gram and transformer models) predict N400 responses for each word. We find that cognitive effort (measured by surprisal) in a multimodal setting significantly differs from that in a unimodal setting. The analysis of surprisal estimates from language models reveals that while Transformer-based models provide better fit to N400 signals in audio-only setting, 2-gram language models fit better in the multimodal setting, suggesting that local verbal context significantly influences cognitive processing effort in a multimodal setting.


Are words equally surprising in audio and audio-visual comprehension?

To investigate how co-speech gestures modulate linguistic understanding, we experimentally test two Bayesian Pragmatic models. We identify the semantic effect of a spoken or gestural utterance with the change it makes in listener’s probabilistic predictions of the speaker’s communicative intentions. We focus on action-expressing gestures and the respective verbs that correspond to action-affording instruments or, respectively, their denoting nouns. Combining Pustejovsky’s’ Generative Lexicon approach with Gibson’s affordance theory, we ask: (1) Does a co-speech gesture make any difference for semantic comprehension and the corresponding probabilistic prediction? (2) Is the semantic effect of a gesture similar or identical to the one of the corresponding verb? (3) To which extent does the gesture’s semantic effect depend on the listener’s recognition of the gesture as an expression of the corresponding verb? (4) Does the comprehended affordance predict the instrument better than the co-occurrence statistics (GloVe) regarding the verb and the noun?


Modelling the Integration of Co-Speech Gestures into Sentence Meaning Composition

Moral learners face an underdetermination problem – the rules they are taught cannot account for all novel cases. One way learners solve this problem is through closure principles, through which a learner assumes that anything that isn’t explicitly forbidden is permitted, and vice versa. The current work aims to explore whether closure rules are used when reasoning about obligations. Building on previous work, we ask 1) whether adults and children use obligation rules in a similar manner to rules about permissibility and impermissibility, and 2) how early in life these inference abilities emerge. Across two studies, we explore inferences about obligation from both adults (N = 120, Mage = 33.73 years) and children (N = 103, Mage = 5.52 years). We found that while both adults and children rationally learn closure principles consistent with deontic logic, children and adults make opposite inferences about novel cases when provided with obligation rules.


Underdetermination and Obligation Rules: Adult and Children’s use of Closure Principles in Moral Learning

A growing body of literature has revealed ordinary causal judgement to be sensitive to normative factors, such that a norm violating agent is regarded more causal than their non-norm violating counterpart. The present paper aims to tease apart two competing explanations: the Responsibility View and the Bias View. The Bias View, but not the Responsibility View, predicts features peripheral to the agent’s responsibility to impact causal attributions. In a series of three preregistered experiments (N = 1162), we present new evidence that the Norm Effect arises from such peripheral features, namely from nonpertinent or entirely silly norm violations. Further, we show that this effect cannot be explained by recourse to the agent’s foreknowledge or desire of the outcome, nor by its foreseeability: the Norm Effect arises even when participants judge the norm violating agent’s doing as equally foreseeable. This, we argue, provides evidence in favour of the Bias View.


Causation, Foreseeability, and Norms

Human learning is often motivated by self-imposed challenges, which guide behavior even in the absence of external rewards. Previous studies have shown that humans can use personal goals to “hack” the definition of reward, warranting an extension of the classic reinforcement learning framework to account for the flexible attribution of value to outcomes according to current goals. However, previous studies have shown that learning through goal-derived outcomes is less efficient than learning through more established reinforcers, such as numeric points. At least three possible explanations exist for this sort of impairment. First, such differences may be due to occasional lapses in executive function, which is required to encode and recognize goals, resulting in subsequent failure to update values accordingly. Second, the higher working memory load required to encode one-shot, novel stimuli as desirable outcomes may impair people’s ability to update and remember correct stimulus-reward associations. Third, a weaker commitment to arbitrary goals may result in dimmer appetitive signals. By extending existing experimental paradigms that include learning from both familiar rewards and abstract, goal-contingent outcomes and combining them with computational modeling techniques, we find evidence for each of the proposed accounts. While other factors might also play a role in this process, our results provide an initial indication of the key elements supporting (or impairing) the attribution of rewarding properties to otherwise neutral stimuli, which enable humans to better pursue arbitrarily set goals.


Human hacks and bugs in the recruitment of reward systems for goal achievement

Why do babies look longer when they see an object pass through a solid wall, or a person act inefficiently, during violation-of-expectation (VOE) studies? Here we test two non-mutually exclusive hypotheses: (i) VOE involves domain-general processes, like visual prediction error, and curiosity about the source of surprise. (ii) VOE involves domain-specific processes, like prediction error over distinctively physical and psychological expectations (objects fall; agents behave rationally). In a pre-registered experiment, we scanned 32 adults using functional magnetic resonance imaging (fMRI) while they watched videos of agents and objects, adapted from infant behavioral research. Early visual regions responded equally to surprising and expected events in both domains, providing evidence against domain-general visual prediction error. Some multiple demand regions, that are engaged when people deploy goal-directed attention, responded more to surprising events from both domains, providing evidence for domain-general endogenous attention. Domain-specific regions, that prefer stimuli involving agents vs objects more broadly, showed similar preferences for the current videos of agents and objects. One region implicated in physical reasoning responded selectively to unexpected events from the physical domain, providing evidence for domain-specific physical prediction error. Thus, in adult brains, both domain-specific and high-level domain-general regions encode violation-of-expectation involving agents and objects, paving the way towards future developmental work.


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When to choose: Information seeking in the speed-accuracy tradeoff

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