Language learners often spend more time comprehending than producing a new language. However, memory research suggests reasons to suspect that production practice might provide a stronger learning experience than comprehension practice. We tested the benefits of production during language learning and the degree to which this learning transfers to comprehension skill. We taught participants an artificial language containing multiple linguistic dependencies. Participants were randomly assigned to either a production- or a comprehension-learning condition, with conditions designed to balance attention demands and other known production-comprehension differences. After training, production-learning participants outperformed comprehension-learning participants on vocabulary comprehension and on comprehension tests of grammatical dependencies, even when we controlled for individual differences in vocabulary learning. This result shows that producing a language during learning can improve subsequent comprehension, which has implications for theories of memory and learning, language representations, and educational practices.

Are bilinguals more creative than monolinguals? Some prior research suggests bilinguals are more creative because the knowledge representations for their second language are similarly structured to those of highly creative people. However, there is contrasting research showing that the knowledge representations of bilinguals' second language are actually structured like those of less creative people. Finally, there is growing skepticism about there being differences between bilinguals and monolinguals on non-language tasks (e.g., the bilingual advantage for executive control). We tested whether bilinguals tested in their second language are more or less creative than both monolinguals and bilinguals tested in their first language. Participants also took a repeated semantic fluency test that we used to estimate individual semantic networks for each participant. We analyzed our results with Bayesian statistics and found support for the null hypothesis that bilingualism offers no advantage for creativity. Further, using best practices for estimating semantic networks, we found support for the hypothesis that there is no association between an individual's semantic network and their creativity. This is in contrast with published research, and suggests that some of those findings may have been the result of idiosyncrasies, outdated methods for estimating semantic networks, or statistical noise. Our results call into question reported relations between bilingualism and creativity, as well as semantic network structure as an explanatory mechanism for individual differences in creativity.

Ongoing debate exists regarding the role of production-based versus comprehension-based training for L2 learning. However, recent research suggests an advantage for production training due to benefits stemming from the opportunity to compare generated output with feedback and from the memory mechanisms associated with language production. Based on recent findings with an artificial language paradigm, we investigated the effects of production-based and comprehension-based training for learning grammatical gender among beginning L2 German learners. Participants received production-based or comprehension-based training on grammatical gender assignment and gender agreement between determiners, adjectives, and 15 German nouns, followed by four tasks targeting the comprehension and production of the target nouns and their corresponding gender marking on determiners and adjectives. Both groups were equally accurate in comprehending and producing the nouns. For tasks requiring knowledge of grammatical gender, the production-based group outperformed the comprehension-based group on both comprehension and production tests. These findings demonstrate the importance of language production for creating robust linguistic representations and have important implications for classroom instruction.

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