PubMed HealthSearch

Biomedical subjects

U Frith

Publications and source records attributed to U Frith.

9 recordsLinked to original sources

Deception and sabotage in autistic, retarded and normal children.

We investigated autistic, mentally retarded, and normal children's ability to deceive or obstruct an opponent. When required to tell a lie (saying that a box was locked) autistic children performed significantly worse than their controls, taking into account mental age. However, they readily prevented a competitor from gaining a reward by physical manipulation (locking a box). Their success on sabotage demonstrated that their failure on deception was not due to an inability to understand the task. Performance on deception was predicted by performance on a false belief attribution task. The present findings confirm that autistic children have a specific deficit in understanding and manipulating beliefs.

Adolescent

Can autism be predicted on the basis of infant screening tests?

The authors examined infant hearing and vision screening tests for a group of children subsequently diagnosed as autistic and compared them with a group of children suffering from non-specific developmental delay, as well as with a random sample of records. Four categories (motor, vision, hearing and language, social) were investigated at three ages: six, 12 and 18 months. The random sample group had a low incidence of reported problems at all ages. The learning-disabled group had a sharp increase in reported abnormalities in all categories at 12 months. The autistic group had a selective increase in the social category alone at 18 months.

Autistic Disorder

The cognitive basis of a biological disorder: autism.

This article summarizes recent evidence indicating that individuals suffering from autism have a specific problem in understanding intentions and beliefs. We propose that this problem arises because they are incapable of forming a special kind of mental representation. A single cognitive deficit defines what is common to all autistic individuals. In contrast there is a wide range of proposals for the biological origins of the disorder.

Autistic Disorder

Prospects for a cognitive neuropsychology of autism: Hobson's choice.

Leslie (1987b) proposed a new, metarepresentational model for the cognition of pretense. This model identified a cognitive component necessary for the normal development of a "theory of mind." In this article, the relation of the child's early affective sensitivities to this component is considered. Early affective sensitivities seem to be cognitively distinct from the metarepresentational component. Childhood autism provides an interesting opportunity to study this problem. Three theoretical possibilities for the pathogenesis of this condition are presented: (a) a basic affective disorder as proposed by Hobson (this issue, p. 114), (b) a basic affective disorder and a basic cognitive disorder jointly, and (c) a basic cognitive disorder. There is little evidence for Option a, and a growing body of evidence supports Option c. Option b is sidelined for the time being on grounds of parsimony. Leslie's original theoretical proposals are revised, and some resulting implications are presented for the future investigation of the cognitive neuropsychology of autism.

Autistic Disorder

Perceiving the language of films.

Children appear to be familiar with the language of film makers or at least to perceive and remember films less well when the rules of this cinematic language are broken. In this experiment a simple action sequence filmed from a static viewpoint was made up into two films of four shots. One film was edited according to the rules of directional continuity specified by Hollywood cinema, that is the four shots were presented so as to preserve the subject's direction of movement across cuts. The other film was edited disregarding these rules. Apart from this difference both films were identical. Children aged seven, nine, and thirteen years watched either of these films and reconstructed the action using pictures representing the four shots. The children who saw the conventional version were better able to reconstruct what they had seen than those who saw the unconventional version.

Adolescent