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 .
Diminished Time-Based, but Undiminished Event-Based, Prospective Memory Among Intellectually High-Functioning Adults With Autism Spectrum Disorder: Relation to Working Memory Ability
Objective : Prospect i ve memory ( PM ) is the ability to remember to carry out an intended action . Working memory is the ability to store information in mind while processing potentially distracting information . The few previous studies of PM in autism spectrum disorder ( ASD ) have yielded inconsistent findings . Studies of working memory ability in ASD have suggested a selective impairment of “ visual working memory . ” However , it remains unclear whether any such impairment is the result of diminished ( domain-specific ; visual/verbal ) storage capacity or diminished ( domain-general ) processing capacity . We aim to clarify these issues and explore the relation between PM and working memory in ASD . Method : Seventeen adults with ASD and 17 age- and IQ-matched comparison participants completed experimental measures of both event-based ( perform action x when event y occurs ) and time-based ( perform action a at time b ) PM , plus a self-report measure of PM skills  . Participants also completed a working memory test battery . Results : Participants with ASD self-reported diminished PM skill , and showed diminished performance on the time-based , but not event-based , PM task . On the working memory test battery , visual but not verbal storage capacity was diminished among participants with ASD , as was processing ability . Whereas visual storage was associated with event-based PM task performance among comparison participants , verbal storage was associated among ASD participants . Conclusions : ASD appears to involve a selective deficit in time-based PM and a selective difficulty with aspects of working memory that depend on the storage of visual information . However , event-based PM may be achieved through compensatory strategies in ASD
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 .