The role of explicit information (EI) as an independent variable in instructed SLA is largely underresearched. Using the framework of processing instruction, however, a series of offline studies has found no effect for EI (e.g., Benati, 2004; Sanz & Morgan-Short, 2004; VanPatten & Oikkenon, 1996). Fernández (2008) presented two online experiments with mixed results. She found an effect for EI with processing instruction on one target structure (subjunctive in Spanish) but not the other structures (object pronouns and word order in Spanish). Thus, the effects of EI could be related to the target structure or to a processing problem, or both. The present study is a conceptual replication of one of Fernández’s experiments. The target was German accusative case markings on articles with both subject (S)- verb (V)- object (O) and OVS word orders. As shown by Jackson (2007) and LoCoco (1987), learners of German as a second language misinterpret OVS sentences as SVO, ignoring case markings as a cue of who does what to whom. Thus, the goal of the instructional intervention was to push learners to process case markings and word order correctly. The treatment consisted of structured input items (Farley, 2005; Lee & VanPatten, 2003) under two conditions: +/−EI. Following Fernández, the treatment was conducted via computer using e-Prime, and learners’ responses were recorded as they made their way through the items. Whereas Fernández did not find an effect for EI for word order and object pronouns in Spanish, we found an effect for word order and case markings in German: (a) Twice as many learners in the +EI group reached criterion (began to process input strings correctly) compared with the −EI group, and (b) learners in the +EI group began processing word order and case markings sooner than in the −EI group. Even though the processing problem was the same in both Fernández’s and our experiments, we attribute the difference in results to the interaction of particular structures with the processing problem and call for additional research on the role of EI not just in processing instruction but in all formal interventions.

No abstract

The present study reports the findings of an experiment on the effects of explicit information on the learning of German case markings. Fifty‐nine learners of first‐ and second‐year German received computer‐based processing instruction on German accusative case marking and word order. These learners were divided into two groups: one received explicit information on the nature and form of case marking in German prior to the treatment, and one group did not. We measured the effects of explicit information by tracking correct responses on the computer as participants made their way through the activities. Analyses revealed that explicit information had an effect: those who received explicit information began to correctly respond to stimulus sentences (i.e., began to correctly indicate who did what to whom) sooner than those who did not. These results contradict previous research and suggest a hidden role for explicit information within processing instruction.

This study investigates the role of prosodic cues and explicit information (EI) in the acquisition of German accusative case markers. We compared 4 groups of 3rd‐semester learners (low intermediate level) who completed 1 of 4 Processing Instruction (PI) treatments that manipulated the presence or absence of EI and focused prosody. The results showed that, when training included EI or prosodic cues, the groups improved on comprehension and production tasks in an immediate posttest. Four weeks after training, the groups sustained gains on the comprehension task, but not on the production task. Participants who did not receive EI or prosody only showed improvement on the comprehension task in the immediate posttest and did not sustain these gains. These findings replicate previous findings on the role of EI in PI, showing an advantage for EI with the target form (e.g., Henry, Culman, & VanPatten, 2009). Moreover, the results suggest that prosodic cues help learners process morphosyntactic forms, and that they can enhance grammar instruction.

This article explores how multiple linguistic cues interact in predictive processing among second language (L2) learners. In a visual-world eye-tracking experiment, we investigated whether learners of German use case and prosody cues together to assign thematic roles and predict post-verbal arguments. During the experiment, participants listened to subject-first and object-first sentences that contained (1) case cues only, or (2) both case and prosody. The results showed that the learners successfully predicted post-verbal arguments on the basis of lexical-semantic information but were less successful in using case cues. However, prediction success increased when both case and prosody were present, suggesting that predictive processing is supported by prosodic cues. Additionally, results show that higher proficiency was associated with faster processing and a greater ability to generate predictions. We conclude that the presence of cue coalitions allows L2 learners to process information more efficiently, and that the L2 processor can exploit the additive use of cues for prediction.