Fenna Poletiek

Presentations

Displaying 1 - 29 of 29
  • Chen, Y., Ferrari, A., Hagoort, P., Bocanegra, B., & Poletiek, F. H. (2023). Learning hierarchical centre-embedding structures: Influence of distributional properties of the Input. Poster presented at the 19th NVP Winter Conference on Brain and Cognition, Egmond aan Zee, The Netherlands.

    Abstract

    Nearly all human languages have grammars with complex recursive structures. These structures pose notable learning challenges. Two distributional properties of the input may facilitate learning: the presence of semantic biases (e.g. p(barks|dog) > p(talks|dog)) and the Zipf-distribution, with short sentences being extremely more frequent than longer ones. This project tested the effect of these sources of information on statistical learning of a hierarchical center-embedding grammar, using an artificial grammar learning paradigm. Semantic biases were represented by variations in transitional probabilities between words, with a biased input (p(barks|dog) > p(talks|dog)) compared to a non-biased input (p(barks|dog) = p(talks|dog)). The Zipf distribution was compared to a flat distribution, with sentences of different lengths occurring equally often. In a 2├Ś2 factorial design, we tested for effects of biased transitional probabilities (biased/non-biased) and the distribution of sequences with varying length (Zipf distribution/flat distribution) on implicit learning and explicit ratings of grammaticality. Preliminary results show that a Zipf-shaped and semantically biased input facilitates grammar learnability. Thus, this project contributes to understanding how we learn complex structures with long-distance dependencies: learning may be sensitive to the specific distributional properties of the linguistic input, mirroring meaningful aspects of the world and favoring short utterances.
  • Kunz, L., Lewis, A. G., Verdonschot, R. G., Hagoort, P., & Poletiek, F. H. (2023). I see, you see: An event-related potential Study of Theory of Mind in a Naturalistic VR Environment. Poster presented at the 19th NVP Winter Conference on Brain and Cognition, Egmond aan Zee, The Netherlands.

    Abstract

    Effective communication involves recognizing the disparity between our own perspective and that of the recipient, influenced by factors such as stereotypes and accents. The extent to which Theory of Mind (ToM), the ability to ascribe beliefs to others, plays a role in this process is uncertain. We anticipate individuals to speak in line with their beliefs, but what if their words conflict with our expectations? To investigate, we devised a virtual perspective-taking experiment where we manipulated a virtual agent's beliefs. Electroencephalography data were collected as participants listened to statements from the agent that either aligned or clashed with their true or false beliefs. We focused on the N400, an event-related brain component linked to word unexpectedness. As hypothesized, statements inconsistent with the agent's true beliefs triggered more pronounced N400 responses compared to matching statements. Furthermore, we anticipated that when the agent held a false belief, this knowledge would factor into interpreting their statements. Neither statements aligned with nor those diverging from the agent's false beliefs evoked N400 responses. This can be taken as evidence that participants did take the agents perspective into account. These results strongly support the role of Theory of Mind in language comprehension.
  • Poletiek, F. H., Aernoudt, A., De Luca, A., Hagoort, P., & Bocanegra, B. (2022). En-languagement of the senses. Can grammar influence sensory perception? The effect of combinatorial and non-combinatorial verbal labels in a visual search task. Talk presented at the 18th NVP Winter Conference on Brain and Cognition. Egmond aan Zee, The Netherlands. 2022-04-28 - 2022-04-30.
  • Aernoudts, A., Kozma, C., De Luca, A., Bocanegra, B., & Poletiek, F. H. (2019). Can grammar influence perception? The effect of combinatorial and non-combinatorial labels on perception in a visual search task. Poster presented at the 60th Annual Meeting of the Psychonomic Society, Montreal, Canada.
  • Poletiek, F. H. (2019). Combinatoriality of language and perception. Talk presented at the Institute of Neuroscience, Newcastle University. Newcastle, UK. 2019-10-20.
  • Poletiek, F. H. (2019). The basics of complex language learning. Talk presented at the Institute of Neuroscience, Newcastle University. Newcastle, UK. 2019-06-14.
  • Poletiek, F. H. (2019). Why complex recursive grammars are so easy to learn. Talk presented at the Workshop for Combinatorial Complex Language Learning at the Max Planck Institute for Cognitive and Brain Sciences. Leipzig, Germany. 2019-02-06.
  • Poletiek, F. H. (2016). Hearing true speech helps to learn a centre embedded hierarchical structure. Talk presented at the Fifth Implicit Learning Seminar at Lancaster University. Lancaster, UK. 2016-06-23 - 2016-06-25.
  • Poletiek, F. H. (2016). Simulating language acquisition in the lab. Talk presented at the Seminar Language Learning, Stanford University. Stanford, CA, USA. 2016.
  • Poletiek, F. H. (2014). Facilitation effects of starting small and semantic biases on learning a complex Grammar: A multi method approach. Talk presented at LUCL Colloquium, University Leiden. Leiden, The Netherlands. 2014-04-25.
  • Poletiek, F. H. (2014). Recursive grammar is learned by using it, not by exposure to it. Poster presented at the 36th Annual Conference of the Cognitive Science Society [CogSci 2014], Quebec, Canada.
  • Poletiek, F. H. (2011). A statistical account of the starting small effect on learning a complex hierarchical grammar in AGL. Talk presented at the 17th Meeting of the European Society for Cognitive Psychology [ESCOP 2011]. Donostia - San Sebastian, Spain. 2011-09-29 - 2011-10-02.
  • Lai, J., & Poletiek, F. H. (2010). The impact of starting small on the learnability of recursion. Talk presented at the 32rd Annual Conference of the Cognitive Science Society (CogSci 2010). Portland, OR, USA. 2010-08-11 - 2010-11-14.
  • Poletiek, F. H. (2010). Learning a centre embedded structure with semantics in a artificial grammar learning task. Talk presented at event. Nijmegen, The Netherlands. 2010-11-22.
  • Poletiek, F. H., & Monaghan, P. (2010). Learning recursion with semantics. Talk presented at event. Berlin, Germany. 2010-02-24.
  • Poletiek, F. H. (2010). Paradoxen van alledaagse beslissingen en beoordelingen. Talk presented at event. Leiden, The Netherlands. 2010-11-01.
  • Lai, J., & Poletiek, F. H. (2009). Starting Small in learning a recursive artificial grammar. Talk presented at the 16th Conference of the European Society for Cognitive Psychology (ESCOP 2009). Krakow, Poland.
  • Poletiek, F. H., & Monaghan, P. (2009). Learning a hierarchical embedded structure with semantics, in AGL. Talk presented at the 50th Annual Meeting of the Psychonomic Society. Boston, MA, USA. 2009-11-19 - 2009-11-22.
  • Poletiek, F. H., & Monaghan, P. (2009). Recursion learning with semantics, in AGL. Talk presented at the 16th Conference of the European Society for Cognitive Psychology (ESCOP 2009). Krakow, Poland.
  • Poletiek, F. H., & Chater, N. (2009). The influence of frequency distribution of the input and test task requirements, in artificial grammar learning (AGL). Talk presented at the 31st Annual Meeting of the Cognitive Science Society. Amsterdam, The Netherlands. 2009-07-29 - 2009-08-01.
  • Poletiek, F. H., & Chater, N. (2008). Recognition and categorization after exposure to equally and unequally distributed stimuli, in AGL. Talk presented at event. Venice, Italy. 2008.
  • Poletiek, F. H., & Chater, N. (2006). Grammar induction profits from representative stimulus sampling. Talk presented at the 28th Annual Conference of the Cognitive Science Society (CogSci 2006). Vancouver, Canada. 2006-07-26 - 2006-07-29.
  • Van den Bos, E. J., & Poletiek, F. H. (2005). Implicit learning of artifical grammars: Under what conditions?. Poster presented at the 46th Annual Meeting of the Psychonomic Society, Toronto, Canada.
  • Poletiek, F. H. (2000). Hypothesis testing and its biases. Talk presented at event. Durham, UK. 2000.
  • Poletiek, F. H. (2000). Strategie├źn van hypothesetoetsing. Talk presented at the Rijksuniversiteit Groningen. Groningen, The Netherlands. 2000-02-24.
  • Poletiek, F. H. (1999). Rationeel vs intuitief redeneren. Talk presented at event. Ameland, The Netherlands. 1999-09-08.
  • Poletiek, F. H. (1999). strategies of falsification. Talk presented at event. Egmond aan Zee, The Netherlands. 1999-12-17.
  • Poletiek, F. H. (1998). How much smart money? The assessment of immaterial damages and compensation in cases of legal liability. Talk presented at event. Berlin, Germany. 1998-11-25.
  • Poletiek, F. H. (1997). The assessment of dangerousness of mentally ill by medical and juridical experts. Talk presented at event. Leeds, UK. 1997-08-18.

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