The active tDCS will be applied at a current of 1-2mA via two saline soaked electrode sponges (3 cm x 4.5 cm) for the first 20 minutes of each CRT session in the active condition.

In the sham condition, tDCS will be ramped up to 1-2 mA via two saline soaked electrode sponges (3 cm x 4.5 cm) over the first 30 seconds of each CRT session and then turned off.

Transcranial direct current stimulation (tDCS) is a form of non-invasive neuromodulation that has been shown to enhance learning. tDCS is applied with current intensity of 1-2 mA of direct current and can be applied both before and during each cognitive remediation treatment session. Two saline soaked electrode sponges will be applied to the scalp.

Clinician-administered neurocognitive battery that assesses the aspects of cognition found to be most impaired and most strongly correlated with outcome in patients with schizophrenia.

Brief Assessment of Cognition in Schizophrenia (BACS) - post training composite z-score range Arm 1 = -2.46 - 2.24 range Arm 2 = -7.67 - 0.83 Higher scores represent better cognitive performance. The BAC APP composite z-score is calculated as the sum of the subscale z-scores (i.e., verbal memory, digit sequencing, verbal fluency, symbol coding, and tower of london), adjusted by participant age and sex.

The primary outcome measure from the BACS is a composite z score, with 0 representing the population mean, normed by age and gender.

The VRFCAT is a performance-based functional capacity measure and the 'total recipes accessed' variable represents one component of the full measure. Using a realistic virtual reality environment, the VRFCAT assesses a subject's ability to complete instrumental activities associated with a shopping trip. This provides an estimate of performance on everyday functional tasks. The summary measures include: total time (seconds), total errors, total progressions, total bus schedule checks, total recipe checks. There is no combined total score for this Tool. The minimum number of recipe checks is 0 and there is no maximum number of recipe checks for this task. A higher score on the summary measure 'total recipe checks' indicates worse performance. This means that the higher the number of times a subject consults the reference materials (i.e., recipe), the worse the performance. Based o

N-back testing is a performance task used to assess working memory. In this task, pairs of numbers are presented on a computer screen, and participant are instructed to press a button whenever the pair of numbers corresponds to the pair of numbers presented two trials before (2-back). Number of hits and number of false alarms are used to calculate d-prime, the primary outcome. Depending on the number of trials completed, the range of d-prime is expected to be from -4.46 (0 hits, 80 FA) to +4.46 (20 hits, 0 FA), based on the literature. In our study, hits ranged from 3-56 and false alarms ranged from 1-146, therefore d-prime ranged from -0.42-4.02 in the full sample for the 2-back condition. A lower score on d-prime indicates worse performance.

reflects the number of correct responses and the unit is the number of trials. Number of hits and number of false alarms are used to calculate d-prime, the primary outcome.

The active tDCS will be applied at a current of 1-2mA via two saline soaked electrode sponges (3 cm x 4.5 cm) for the first 20 minutes of each CRT session in the active condition.

tDCS: Transcranial direct current stimulation (tDCS) is a form of non-invasive neuromodulation that has been shown to enhance learning. tDCS is applied with current intensity of 1-2 mA of direct current and can be applied both before and during each cognitive remediation treatment session. Two saline soaked electrode sponges will be applied to the scalp.

Clinician-administered neurocognitive battery that assesses the aspects of cognition found to be most impaired and most strongly correlated with outcome in patients with schizophrenia.

Brief Assessment of Cognition in Schizophrenia (BACS) - post training composite z-score range Arm 1 = -2.46 - 2.24 range Arm 2 = -7.67 - 0.83 Higher scores represent better cognitive performance. The BAC APP composite z-score is calculated as the sum of the subscale z-scores (i.e., verbal memory, digit sequencing, verbal fluency, symbol coding, and tower of london), adjusted by participant age and sex.

The primary outcome measure from the BACS is a composite z score, with 0 representing the population mean, normed by age and gender.

The active tDCS will be applied at a current of 1-2mA via two saline soaked electrode sponges (3 cm x 4.5 cm) for the first 20 minutes of each CRT session in the active condition.

tDCS: Transcranial direct current stimulation (tDCS) is a form of non-invasive neuromodulation that has been shown to enhance learning. tDCS is applied with current intensity of 1-2 mA of direct current and can be applied both before and during each cognitive remediation treatment session. Two saline soaked electrode sponges will be applied to the scalp.