[4] The 15 symptoms rated by TODS include tics as well as obsessions and compulsions; attentional difficulties, restlessness and impulsiveness; and depression, anxiousness, aggression and other mood or behavioral issues.
[2] In a 2003 study by Shytle and colleagues, a survey was sent to parents from a TS group email list, asking them to rate the frequency and relative significance of 32 behavioral and emotional symptoms observed in their children.
[2] For the development of the parent-rated version of TODS, parents of individuals with tics subjectively rated symptom severity in accordance with their observations over fixed time periods.
[6] On the attention deficit hyperactivity disorder factor and TODS total score, clinicians rated the distress to individuals with tics as significantly greater than parents did.
[6] Explanations for this discrepancy mainly highlighted clinicians' greater level of detachment compared to parents, allowing them to be more objective in assessment and attuned to the distress of the individual with tics.