TG and Graves disease: This study aimed to (1) determine the selective attention level and information processing speed with the Stroop Color and Word test in patients recently diagnosed with thyrotoxic Graves’ disease who had not yet started treatment, (2) observe the changes in attention levels and information processing speed when these patients became euthyroid under treatment, and (3) examine the relationship of selective attention level and information processing speed with thyroid hormone and autoantibody levels, as well as the psychopathological processes such as anxiety and depression.