The results show different consistency across studies between the three types of timing ability .
The highest consistency of results showing atypical time perception abilities is found in high-level time perception studies .
It remains unclear if autism is characterized by a fundamental time perception impairment .
Overall , there are a number of studies that show differences between autistic and non-autistic individuals , but some studies do not find such differences .
Group differences are more consistent across studies using complex tasks rather than simpler more fundamental timing tasks .
Problems with timing and time perception have been suggested as key characteristics of autism spectrum condition ( ASC ) .
Studies and personal accounts from clinicians , parents , caregivers , and self-reports from autistic people themselves often refer to problems with time .
Although a number of empirical studies have examined aspects relating to time in autistic individuals , there remains no clear consensus on whether or how timing mechanisms may be affected in autism .
More is not necessarily better: Examining the nature of the temporal reference memory component in timing
Three experiments compared the timing performance of humans on a modified temporal generalization task with 1 , 3 , or 5 presentations of the st and ard duration .  In all three experiments subjects received presentations of a st and ard duration at the beginning of a trial block and then had to judge whether each of a number of comparison stimuli was or was not the st and ard . The duration of the st and ard changed between blocks . The three experiments varied the experimental design ( between or within subjects ) , task difficulty ( how closely the comparison stimuli were spaced around the st and ards ) , and  presence or absence of feedback on performance accuracy . Number of presentations of the st and ard never affected the proportion of identification s of the st and ard when it was presented , nor other features of the temporal generalization gradients observed . The implication s for the operation of reference memories within the scalar timing system were explored via models that made different assumptions about how the individual presentations of the st and ard were stored and used
The results show different consistency across studies between the three types of timing ability .
The highest consistency of results showing atypical time perception abilities is found in high-level time perception studies .
It remains unclear if autism is characterized by a fundamental time perception impairment .
Overall , there are a number of studies that show differences between autistic and non-autistic individuals , but some studies do not find such differences .
Group differences are more consistent across studies using complex tasks rather than simpler more fundamental timing tasks .
Problems with timing and time perception have been suggested as key characteristics of autism spectrum condition ( ASC ) .
Studies and personal accounts from clinicians , parents , caregivers , and self-reports from autistic people themselves often refer to problems with time .
Although a number of empirical studies have examined aspects relating to time in autistic individuals , there remains no clear consensus on whether or how timing mechanisms may be affected in autism .