representations neural networks can acquire using standard training data.

Methods
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Experimental Stimuli {#stimuli}
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In the present study, we compare the attachment preferences of RNN LMs to those established in @fernadez2003bilingual. @fernadez2003bilingual demonstrated that humans have consistent RC attachment biases using both self-paced reading and offline comprehension questions. They tested both English and Spanish monolinguals (along with bilinguals) using parallel stimuli across the two languages, which we adopt in the experiments in this paper.[^2]

Specifically, @fernadez2003bilingual included 24 items per language, 12 with a singular RC verb (*was*) and 12 with a plural RC verb (*were*). The English and Spanish stimuli are translations of each other, so they stand as minimal pairs for attachment preferences. Example stimuli are given below.

. \[fullstim\] . Andrew had dinner yesterday with the of the teachers that was divorced. \[fullA\] . Andrew had dinner yesterday with the nephews of the that was divorced. \[fullB\] . André cenó ayer con el de los maestros que estaba divorciado.\[fullC\] . André cenó ayer con los sobrinos del que estaba divorciado. \[fullD\]

The underlined nominal above marks the attachment point of the relative clause (*that was divorced*). \[fullA\] and \[fullC\] exhibit HIGH attachment, while \[fullB\] and \[fullD\] 