linear-mixed effects models

Language and vision in conceptual processing: Multilevel analysis and statistical power

Publication

Research has suggested that conceptual processing depends on both language-based and vision-based information. We tested this interplay at three levels of the experimental structure: individuals, words and tasks. To this end, we drew on three …

Language and sensorimotor simulation in conceptual processing: Multilevel analysis and statistical power

Publication

Multilevel analyses investigating the interplay between language-based and vision-based information in conceptual processing across semantic priming, semantic decision and lexical decision paradigms, with power analyses revealing sample size requirements for examining perceptual simulation and individual differences.

Preregistration: The interplay between linguistic and embodied systems in conceptual processing

Publication

This preregistration outlines a study that will investigate the dynamic nature of conceptual processing by examining the interplay between linguistic distributional systems—comprising word co-occurrence and word association—and embodied systems—comprising sensorimotor and emotional information. A set of confirmatory research questions are addressed using data from the Calgary Semantic Decision project, along with additional measures for the stimuli corresponding to distributional language statistics, embodied information, and individual differences in vocabulary size.

Mixed-effects models in R and a new tool for data simulation

Presentation

In this talk, I will look over the rationale for LMEMs, and demonstrate how to fit them in R (Brauer & Curtin, 2018; Luke, 2017). Challenges will also be covered. For instance, when using the widely-accepted 'maximal' approach, based on fitting all possible random effects for each fixed effect, models sometimes fail to find a solution, or 'convergence'. Advice for the problem of nonconvergence will be demonstrated, based on the progressive lightening of the random effects structure (Singman & Kellen, 2017; for an alternative approach, especially with small samples, see Matuschek et al., 2017). At the end, on a different note, I will present a web application that facilitates data simulation for research and teaching (Bernabeu & Lynott, 2020).

Event-related potentials: Why and how I used them

Post

Overview of event-related potentials as a research method, covering electroencephalography fundamentals, ERP definitions and processing, and their application to studying the time course of cognitive processes like conceptual processing.

Modality switch effects emerge early and increase throughout conceptual processing: Evidence from ERPs

Publication

We tested whether conceptual processing is modality-specific by tracking the time course of the Conceptual Modality Switch effect. Forty-six participants verified the relation between property words and concept words. The conceptual modality of …

Modality switches occur early and extend late in conceptual processing: Evidence from ERPs

Publication

Event-related potential experiment investigating conceptual modality switching, finding early-onset negativity effects (160-750 ms) that increase over time, suggesting sensory regions have a functional role in conceptual processing and supporting the compatibility of distributional and embodied processing.

Modality switch effects emerge early and increase throughout conceptual processing: Evidence from ERPs

Post

An ERP study demonstrating that conceptual modality switch effects emerge within 200ms and increase throughout processing, supporting the role of perceptual simulation in conceptual processing while suggesting that both amodal and modal systems contribute to cognition.