The specific aims of the current research protocol are as follows: Aim 1: To test the hypothesis that SIP training of individuals with ABI will improve processing speed. This study is expected to demonstrate that individuals with ABI that receive SIP training will improve on neurocognitive measures of processing speed. Aim 2: To test the generalizability of SIP training of individuals with TBI to other cognitive domains beyond information processing speed. This study is expected to demonstrate increases in working memory, attention and executive functioning in the group that receives the cognitive training. Aim 3: To test the hypothesis that SIP training of individuals with TBI will improve mood. This study is expected to demonstrate that self-reported levels of depression will improve in the group that receives cognitive training. Aim 4: To examine if changes in the neural integrity of white matter pathways of the brain occur in individuals that undergo the SIP training.