Majored in psychology, graduated from the University of Turku in 2003, defended PhD in 2011. My biggest research interests have concerned the language processing and development of reading but cool new projects have enlargened my horizons, as you can see. I largely employ eye movement tracking in my studies. As I'm a firm believer of open science, you can find downloads to all of my papers below.
Note: PDF = download
Peer-reviewed publications
- Olkoniemi, H., Häikiö, T., Merinen, M., Manninen, J., Laine, M., & Pexman, P. M. (2025). Learning irony in school: Effects of metapragmatic training. Journal of Child Language, Advance online publication. https://doi.org/10.1017/S0305000925000054 • PDF
- Kaakinen, J. K., Havu-Nuutinen, S., Häikiö, T., Julku, H., Koskela, T., Mikkilä-Erdmann, M., Pihlajamäki, M., Pritup, D., Pulkkinen, K., Saarikivi, K., Simola, J., & Wikström, V. (2025). Science capital: Results from a Finnish population survey. Public Understanding of Science. https://doi.org/10.1177/09636625241310756 • PDF
- Kanerva, O., Häikiö, T., Päällysaho, H., & Kaakinen, J. K. (2024). Impact of awe on topic interest and recognition memory for information in planetarium films. Cognition and Emotion. https://doi.org/10.1080/02699931.2024.2428787 • PDF
- Luotola, A., Korja, R., Leppänen, J., Yada, A., Häikiö, T., Lahtela, H., Holmberg, E., Nordenswan, E., Eskola, E., Nolvi, S., Karlsson, H., Karlsson, L., & Kataja, E.-L. (2024). Reciprocal Relationships Between a Child’s Engagement with Faces and Mother-Child Interaction at 8, 30, and 60 Months. Developmental Psychology, Advance online publication. https://doi.org/10.1037/dev0001831 • PDF
- Itkonen, S., Häikiö, T., Vainio, S., & Lehtonen, M. (2024). LASTU: A psycholinguistic search tool for Finnish lexical stimuli. Behavior Research Methods, 56, 6165-6178. https://doi.org/10.3758/s13428-024-02347-x • PDF
- Eskola, E., Kataja, E.-L., Hyönä, J., Hakanen, H., Nolvi, S., Häikiö, T., Pelto, J., Karlsson, H., Karlsson, L., & Korja, R. (2024). Lower maternal emotional availability is related to increased attention toward fearful faces during infancy. Infant Behavior and Development, 74, March 2024, 101900. https://doi.org/10.1016/j.infbeh.2023.101900 • PDF
- Häikiö, T., & Kanerva, O. (2023). Eye movements unveil that iconicity facilitates semantic recognition of onomatopoeic words. Poljarnyj vestnik, 26(November), 1-23. https://doi.org/10.7557/6.6880 • PDF
- Eskola, E., Kataja, E.-L., Pelto, J., Tuulari, J. J., Hyönä, J., Häikiö, T., Hessels, R. S., Holmberg, E., Nordenswan, E., Karlsson, H., Karlsson, L., & Korja, R. (2023). Attention biases for emotional facial expressions during a free viewing task increase between 2.5 and 5 years of age. Developmental Psychology, 59(11), 2065-2079. https://doi.org/10.1037/dev0001598 • PDF
- Olkoniemi, H., Halonen, S., Pexman, P. M., & Häikiö, T. (2023). Children’s processing of written irony: An eye-tracking study. Cognition, 238, September 2023, 105508. https://doi.org/10.1016/j.cognition.2023.105508 • PDF
- Eskola, E., Kataja, E.-L., Hyönä, J., Nolvi, S., Häikiö, T., Carter, A. S., Karlsson, H., Karlsson, L., & Korja, R. (2023). Higher attention bias for fear at 8 months of age is associated with better socioemotional competencies during toddlerhood. Infant Behavior and Development, 71, May 2023, 101838. https://doi.org/10.1016/j.infbeh.2023.101838 • PDF
- Schroeder, S., Häikiö, T., Pagán, A., Dickins, J. H., Hyönä, J., & Liversedge, S. P. (2022). Eye movements of children and adults reading in three different orthographies. Journal of Experimental Psychology: Learning, Memory, and Cognition, 48(10), 1518–1541. https://doi.org/10.1037/xlm0001099 • PDF
- Laasanen, M., Pajunen, A., & Häikiö, T. (2022). Kielen natiivihallinnan variaatio ja sosiolingvistinen meneillään olevan kielenmuutoksen tutkimus. Virittäjä, 126(3). https://doi.org/10.23982/vir.83371 • PDF
- Kataja, E-L., Eskola, E., Pelto, J., Paija, S-P., Nolvi, S., Häikiö, T., Karlsson, L., Karlsson, H., & Leppänen, J. M. (2022). The stability of early-developing attentional bias for faces and fear from 8 to 30 and 60 months. Developmental Psychology, 58(12), 2264–2274. https://doi.org/10.1037/dev0001432 • PDF
- Fawcett, C., Nordenswan, E., Yrttiaho, S., Häikiö, T., Korja, R., Karlsson, L., Karlsson, H., & Kataja, E-L. (2022). Individual differences in pupil dilation to others’ emotional and neutral eyes with varying pupil sizes. Cognition and Emotion, 36(5), 928-942. https://doi.org/10.1080/02699931.2022.2073973 • PDF
- Aatsinki, A-K., Kataja, E-L., Munukka, E., Lahti, L., Keskitalo, A., Korja, R., Nolvi, S., Häikiö, T., Tarro, S., Karlsson, H., & Karlsson, L. (2022). Infant fecal microbiota composition and attention to emotional faces. Emotion, 22(6), 1159-1170. https://doi.org/10.1037/emo0000924 • PDF
- Kanerva, O. & Häikiö, T. (2022). Sound symbolic potential of Russian onomatopoeias: Evidence from eye-tracking. Journal of Experimental Psychology: Learning, Memory, and Cognition, 48(3), 432-445. https://doi.org/10.1037/xlm0001114 • PDF
- Häikiö, T. & Luotojärvi, T. (2022). The effect of syllable-level hyphenation on novel word reading in early Finnish readers: Evidence from eye movements. Scientific Studies of Reading, 26(1), 38-46. https://doi.org/10.1080/10888438.2021.1874384 • PDF
- Holm, S. K., Häikiö, T., Olli, K., & Kaakinen, J. K. (2021). Eye movements during dynamic scene viewing are affected by visual attention skills and events of the scene: Evidence from first-person shooter gameplay videos. Journal of Eye Movement Research, 14(2). https://doi.org/10.16910/jemr.14.2.3 • PDF
- Kataja, E-L., Rodrigues, A. J., Scheinin, N. M., Nolvi, S., Korja, R., Häikiö, T., Ekholm, E., Sousa, N., Karlsson, L., & Karlsson, H. (2021). Prenatal glucocorticoid-exposed infants do not show an age-typical fear bias at 8 months of age – Preliminary findings from the FinnBrain Birth Cohort Study. Frontiers in Psychology, section Developmental Psychology, 12:655654. https://doi.org/10.3389/fpsyg.2021.655654 • PDF
- Eskola, E., Kataja, E-L., Hyönä, J., Häikiö, T., Pelto, J., Karlsson, H., Karlsson, L., & Korja. R. (2021). Behavioral regulatory problems are associated with a lower attentional bias to fearful faces during infancy. Child Development, 92(4), 1539-1553. https://doi.org/10.1111/cdev.13516 • PDF
- Tuulari, J. J., Kataja, E-L., Leppänen, J., Lewis, J., Nolvi, S., Häikiö, T., Lehtola, S., Hashempour, N., Saunavaara, J., Scheinin, N., Korja, L., Karlsson, L., & Karlsson, H. (2020). Newborn left amygdala volume associates with attention disengagement from fearful faces at eight months. Developmental Cognitive Neuroscience, 45, October 2020, 100839. https://doi.org/10.1016/j.dcn.2020.100839 • PDF
- Kataja, E-L., Leppänen, J. M., Kantojärvi, K., Pelto, J., Häikiö, T., Korja, R., Nolvi, S., Karlsson, H., Paunio, T., & Karlsson, L. (2020). The role of TPH2 variant rs4570625 in shaping infant attention to social signals. Infant Behavior and Development, 60, August 2020, 101471. https://doi.org/10.1016/j.infbeh.2020.101471 • PDF
- Tervola, M., Vainio. S., & Häikiö, T. (2020). Potilassanaston hallinta terveydenhuoltoalalla: maahanmuuttajataustaisten lääkärien ja asioimistulkkiopiskelijoiden sananmerkityksen tarkkuus. Virittäjä, 124(1). https://doi.org/10.23982/vir.70136 • PDF
- Kataja, E-L., Karlsson, L., Leppänen, J. M., Pelto, J., Häikiö, T., Nolvi, S., Pesonen, H., Parsons, C. E., Hyönä, J., & Karlsson, H. (2020). Maternal depressive symptoms during the pre- and postnatal periods and infant attention to emotional faces. Child Development, 91, e475-e480. https://doi.org/10.1111/cdev.13152 • PDF
- Kataja. E-L., Karlsson, L., Parsons, C. E., Pelto, J., Pesonen, H., Häikiö, T., Hyönä, J., Nolvi, S., Korja, R., & Karlsson, H. (2019). Maternal pre- and postnatal anxiety symptoms and infant attention disengagement from emotional faces. Journal of Affective Disorders, 243, 280-289. https://doi.org/10.1016/j.jad.2018.09.064 • PDF
- Vainio, S., Pajunen, A., & Häikiö, T. (2019). Acquisition of Finnish derivational morphology: school-age children and young adults. First Language, 39(2), 139-157. https://doi.org/10.1177%2F0142723718805185 • PDF
- Häikiö, T. & Vainio, S. (2018). Syllables and inflectional morphemes in early Finnish readers: Evidence from eye movements. Journal of Child Language, 45(5), 1227-1245. https://doi.org/10.1017/S0305000918000132 • PDF
- Häikiö, T., Heikkilä, T. T., & Kaakinen. J. K. (2018). The effect of syllable-level hyphenation on reading comprehension: Evidence from eye movements. Journal of Educational Psychology, 110(8), 1149-1159. https://doi.org/10.1037/edu0000261 • PDF
- Cui, L., Häikiö, T., Zhang, W., Zheng, Y., & Hyönä, J. (2017). Reading monomorphemic and compound words in Chinese. The Mental Lexicon, 12(1), 1-20. https://doi.org/10.1075/ml.12.1.01cui • PDF
- Häikiö, T., Bertram, R., & Hyönä, J. (2016). The hyphen as a syllabification cue in reading bisyllabic and multisyllabic words among Finnish 1st and 2nd graders. Reading and Writing, 29(1), 159-182. https://doi.org/10.1007/s11145-015-9584-x • PDF
- Häikiö, T., Hyönä, J., & Bertram, R. (2015). The role of syllables in word recognition among beginning Finnish readers: Evidence from eye movements during reading. Journal of Cognitive Psychology, 27(5), 562-577. https://doi.org/10.1080/20445911.2014.982126 • PDF
- Häikiö, T., Bertram, R., & Hyönä, J. (2011). The development of whole-word representations in compound word processing: Evidence from eye fixation patterns of elementary school children. Applied Psycholinguistics, 32(3), 533-551. https://doi.org/10.1017/S0142716411000208 • PDF
- Blythe, H. I., Häikiö, T., Bertram, R., Liversedge, S. P., & Hyönä, J. (2011). Reading disappearing text: Why do children refixate words? Vision Research, 51(1), 84-92. https://doi.org/10.1016/j.visres.2010.10.003 • PDF
- Häikiö, T., Bertram, R., & Hyönä, J. (2010). Development of parafoveal processing within and across words in reading: Evidence from the boundary paradigm. The Quarterly Journal of Experimental Psychology, 63(10), 1982-1998. https://doi.org/10.1080/17470211003592613 • PDF
- Häikiö, T., Bertram, R., Hyönä, J., & Niemi, P. (2009). Development of the letter identity span in reading: Evidence from the eye movement moving window paradigm. Journal of Experimental Child Psychology, 102(2), 167-181. https://doi.org/10.1016/j.jecp.2008.04.002 • PDF
- Hyönä, J. & Häikiö, T. (2005). Is emotional content picked up of parafoveal words during reading? An eye movement analysis. Scandinavian Journal of Psychology, 46(6), 475-483. https://doi.org/10.1111/j.1467-9450.2005.00479.x • PDF
- Moscoso del Prado Martin, F., Bertram, R., Häikiö, T., Schreuder, R., & Baayen, R. H. (2004). Morphological Family Size in a Morphologically Rich Language: The Case of Finnish Compared With Dutch and Hebrew. Journal of Experimental Psychology: Learning, Memory, and Cognition, 30(6), 1271-1278. https://doi.org/10.1037/0278-7393.30.6.1271 • PDF
Thesis
Häikiö, T. (2011). Reading development during elementary school years. Evidence from eye movements. Annales Universitatis Turkuensis, Ser. B, 333. https://urn.fi/URN:ISBN:978-951-29-4614-3 [download at link]