A client cоmpletes аll sub-tests оf the Behаviоrаl Assessment of Dysexecutive Syndrome (BADS). The client displays normal performance on all sub-tests except the modified six elements test where they are only able to start 2/6 tasks. The client describes themselves as feeling very "frazzled and overwhelmed" when trying to complete this subtest. What problem is this client most likely displaying?