User warning: The following module is missing from the file system: drupalcenter. For information about how to fix this, see the documentation page. in _drupal_trigger_error_with_delayed_logging() (line 1156 of /is/htdocs/wp12143056_WQ0Z5PIXWE/www/

Helmich, I., Skomroch, H., & Lausberg, H. (2014). Neuropsychological functions of hand movements and gestures change in the presence or absence of speech. Journal of Cognitive Psychology, 26 (7), 740-753, DOI: 10.1080/20445911.2014.961925