Although clinical trials are only in the planning stages due to the recentness of the outbreaks (the earliest symptoms were reported in March of this year), epistemological studies indicate a correlation between visual stimuli resulting in a rise in body temperature and increased symptoms, including forgetfulness, hypnagogia, and perpetual grinning. Although many sufferers report concern on the part of family and friends, certain forms of ODD reportedly have the opposite effect, inducing those close to the individual to observe an overall mood elevation. Researchers warn that this form of ODD may be particularly insidious, resulting in a failure of those in contact with the sufferer to recognize the condition. Although the affliction was known to include visual triggers, not until this week have researchers concluded that such components may in certain cases cause severe symptoms. Study participants still maintain that the primary inducing factor is aural stimulation.