Nicole Ziegler

Triangulating measures of awareness:a contribution to the debate on learning without awareness

Williams’s (2005) study on “learning without awareness” and three subsequent extensions (Faretta-Stutenberg & Morgan-Short, 2011; Hama & Leow, 2010; Rebuschat, Hamrick, Sachs, Riestenberg, & Ziegler, 2013) have reported conflicting results, perhaps in part due to differences in how awareness has been measured. The present extension of Williams (2005) addresses this possibility directly by triangulating data from three awareness measures: concurrent verbal reports (think-aloud protocols), retrospective verbal reports (postexposure interviews), and subjective measures (confidence ratings and source attributions). Participants were exposed to an artificial determiner system under incidental learning conditions. One experimental group thought aloud during training, another thought aloud during training and testing, and a third remained silent, as did a trained control group. All participants were then tested by means of a forced-choice task to establish whether learning took place. In addition, all participants provided confidence ratings and source attributions on test items and were interviewed following the test. Our results indicate that, although all experimental groups displayed learning effects, only the silent group was able to generalize the acquired knowledge to novel instances. Comparisons of concurrent and retrospective verbal report data shed light on the conflicting findings previously reported in the literature and highlight important methodological issues in implicit and explicit learning research.

SYNCHRONOUS COMPUTER-MEDIATED COMMUNICATION AND INTERACTION

The current study reports on a meta-analysis of the relative effectiveness of interaction in synchronous computer-mediated communication (SCMC) and face-to-face (FTF) contexts. The primary studies included in the analysis were journal articles and dissertations completed between 1990 and 2012 ( k = 14). Results demonstrate that interaction in SCMC and FTF had a significant impact on second language (L2) development, providing further support for previous research demonstrating the efficacy of interaction in both communication modes (e.g., Mackey & Goo, 2007 ; Pellettieri, 2000 ; Smith, 2004 , 2005 ). There was also a small advantage for interaction in SCMC on measures of overall L2 learning outcomes, with additional analyses indicating a small advantage for SCMC interaction on productive and written measures and a small advantage for FTF interaction on receptive and oral learning outcomes. Interestingly, there were no significant differences between SCMC and FTF, suggesting the mode of communication has no statistically significant impact on the positive developmental benefits associated with interaction.

The Impact of Recasts on the Development of Primary Stress in a Synchronous Computer-Mediated Environment.

Although previous research has demonstrated the efficacy of recasts on second language (L2) morphology and lexis (e.g., Li, 2010 ; Mackey & Goo, 2007 ), few studies have examined their effect on learners’ phonological development (although see Saito, 2015 ; Saito & Lyster, 2012 ). The current study investigates the impact of recasts on the development of lexical stress, defined as the placement of emphasis on a particular syllable within a word by making it louder and longer, in oral synchronous computer-mediated communication (SCMC) and face-to-face (FTF) interaction. Using a pretest-posttest design, intermediate learners of English were randomly assigned to one of four groups: FTF recast, SCMC recast, FTF control, or SCMC control. Pre- and posttests consisted of sentence-reading and information-exchange tasks, while the treatment was an interactive role-play task. Syllable duration, intensity, and pitch were used to analyze learners’ development of stress placement. The statistical analyses of the acoustic correlates did not yield significant differences. However, the observed patterns suggest that there is need for further investigation to understand the relationship between recasts and development of lexical stress.

A Review of “Key concepts in second language acquisition”

Intended to offer readers a basic introduction to the major concepts and key issues in second language acquisition (SLA), Loewen and Reinders’ book provides the reader with a quick reference text o...