Moral reasoning and decision making help guide behavior and facilitate interpersonal relationships. Accounts of morality that position commonsense psychology as the foundation of moral development, (i.e., rationalist theories) have dominated research in morality in autism spectrum disorder (ASD). Given the well-documented differences in commonsense psychology among autistic individuals, researchers have investigated whether the development and execution of moral judgement and reasoning differs in this population compared with neurotypical individuals. In light of the diverse findings of investigations of moral development and reasoning in ASD, a summation and critical evaluation of the literature could help make sense of what is known about this important social-cognitive skill in ASD. To that end, we conducted a systematic review of the literature investigating moral decision making among autistic children and adults. Our search identified 29 studies. In this review, we synthesize the research in the area and provide suggestions for future research. Such research could include the application of an alternative theoretical framework to studying morality in autism spectrum disorder that does not assume a deficits-based perspective.

Working memory (WM) plays an important role in children's learning and is linked to later academic and occupational success. Understanding the early development of WM can provide critical clues regarding the underlying structure of executive functions and how they change over the life span. The main objectives of the present study were to (1) investigate age differences in the development of three components of WM (retrieval, substitution, transformation) on a novel preschool WM measure and (2) explore whether findings are consistent with the hierarchical model of WM development by examining perseverative and non-perseverative WM errors. Perseverative errors were hypothesized to be more strongly associated with problems substituting and transforming a representation held in mind, whereas non-perseverative errors were hypothesized to be associated with problems maintaining a representation in mind. Participants were 64 children ranging in age from 3.0 to 5.6 years. The results provide evidence for the sensitivity of the WM task to age differences from 3 to 5 years and support for the hierarchical model of WM development.

Psychometrically sound tests of intellectual ability are indispensable for research and assessment of children with autism spectrum disorder (ASD), yet few tests have been validated for use with this population. The Merrill–Palmer–Revised Scales of Development (M-P-R) is a standardized test of intellectual ability that was validated for use with typically developing preschoolers. The current study’s aim was to investigate the criterion validity of the M-P-R for assessing cognitive skills in preschoolers with ASD ( N = 180). Good concurrent validity was demonstrated, with a large positive correlation between the M-P-R Receptive Language domain and the PLS-4 Auditory Comprehension subscale. The Cognitive domain of the M-P-R showed a medium positive correlation with later WISC-4 scores, showing acceptable predictive validity. Cognitive strengths and weaknesses assessed using the M-P-R mirrored those described for other measures, with most children obtaining higher standard scores on the Cognitive than the Receptive Language domain. An exploratory factor analysis suggested that one factor accounted for the majority of variability in M-P-R domains.

Morality is important for how humans treat each other and non-human animals. Differences in moral reasoning have been found between autistic and neurotypical individuals. Research in this area has relied on accounts of moral psychology that suggest increasingly mature moral principles that develop from taking the perspectives of others. Yet, even autistic individuals, who sometimes differ in their ability to take others’ perspectives, make moral judgements that are similar to neurotypical individuals. Moral foundations theory suggests that moral psychology is not hierarchical but differs depending on culture. Moral foundations theory has not yet been investigated among autistic individuals. This qualitative study used interviews and qualitative analysis as a first attempt at understanding how moral foundations theory fits with autistic moral thinking. We found that all five moral foundations of moral foundations theory were represented in the interviews, yet certain foundations appeared more prominent than others. The autistic adults interviewed in our study discussed issues of care and fairness more than of loyalty, authority or purity when prompted to discuss moral transgressions. Future research should use quantitative methods to compare groups of autistic and neurotypical individuals to clarify similarities and differences in moral thinking between the groups. Lay abstract Morality is important for how humans treat each other and non-human animals. Differences in moral thinking have been found between autistic and neurotypical individuals. This research has relied on ways of thinking about moral psychology that suggest that mature morals develop as individuals learn to take the perspectives of others. Yet, even autistic individuals, who sometimes differ in their ability to take others’ perspectives, make moral judgements that are similar to neurotypical individuals. Moral foundations theory suggests that moral psychology is not hierarchical but differs depending on culture. This theory could therefore help make sense of similarities and differences in autistic and neurotypical moral thinking. Moral foundations theory has not yet been investigated among autistic individuals. In this study, we interviewed autistic adults as a first attempt at understanding how moral foundations theory fits with autistic moral thinking. We found that all five moral foundations of moral foundations theory were represented in the interviews, yet certain foundations appeared more prominent than others. The autistic adults interviewed in our study discussed issues of care and fairness more than of loyalty, authority or purity when prompted to discuss moral transgressions. Future research should use quantitative methods to compare groups of autistic and neurotypical individuals to clarify similarities and differences in moral thinking between the groups.

No abstract