{"id":{"repo_id":"kings","oai_identifier":"oai:kclpure.kcl.ac.uk:studenttheses/659df988-9c1d-4aba-bd79-78f7d7c45690"},"canonical_url":"https://search.dev.ndltd.org/etd/kings/oai:kclpure.kcl.ac.uk:studenttheses/659df988-9c1d-4aba-bd79-78f7d7c45690","repository":{"repo_id":"kings","name":"King's College London","base_url":"https://kclpure.kcl.ac.uk/ws/oai"},"display":{"title":"Psychosis and aggression in childhood & adolescence: investigations in clinically referred, inpatient and general population samples","abstract":"Background: Despite evidence of an increased risk of violence among adults with psychosis, little is known about the relationship between psychosis and aggression in young people. Aim: To compare clinical characteristics and associated features in young people with co-occurring psychosis and aggression to those with psychosis or aggression alone. Hypothesis: Those with both psychosis and aggression will share risk factors and correlates with both ’pure’ groups. Method: Three samples were examined. The first (n=6,770), involved secondary data analysis and used information routinely collected on young people referred to the Maudsley Hospital over a 40 year period; the second study involved new data collection by the author, and focused on young people admitted to inpatient units (n=106); the third (n=2,232) involved secondary data analysis and used data from the Environmental Risk Longitudinal Twin Study, a non-referred community sample. Results: Comparisons of co-occurring cases with those with psychosis or aggression only suggested that co-occurring cases showed symptom profiles and risk factors typical of both ’pure’ conditions; in addition, they had higher rates of callous/unemotional traits and parental antisocial behaviour than either ’pure’ group. Independent predictors of psychosis and co-occurring aggression were low IQ, lower scores on theory of mind tasks, internalising problems, exposure to maltreatment, poor educational attainment and oppositional behaviour. Discussion: Consistent with the proposed hypothesis, young people with psychosis and co-occurring aggression shared risk factors and correlates with both ’pure’ groups and showed some additional distinctive features. Conclusions: It is possible to identify psychosis and co-occurring aggressive behaviour in child and adolescent samples; many of the risk factors for the co-occurring pattern appeared similar to those identified in adult studies. Implication","abstract_html":"Background: Despite evidence of an increased risk of violence among adults with psychosis, little is known about the relationship between psychosis and aggression in young people. Aim: To compare clinical characteristics and associated features in young people with co-occurring psychosis and aggression to those with psychosis or aggression alone. Hypothesis: Those with both psychosis and aggression will share risk factors and correlates with both ’pure’ groups. Method: Three samples were examined. The first (n=6,770), involved secondary data analysis and used information routinely collected on young people referred to the Maudsley Hospital over a 40 year period; the second study involved new data collection by the author, and focused on young people admitted to inpatient units (n=106); the third (n=2,232) involved secondary data analysis and used data from the Environmental Risk Longitudinal Twin Study, a non-referred community sample. Results: Comparisons of co-occurring cases with those with psychosis or aggression only suggested that co-occurring cases showed symptom profiles and risk factors typical of both ’pure’ conditions; in addition, they had higher rates of callous/unemotional traits and parental antisocial behaviour than either ’pure’ group. Independent predictors of psychosis and co-occurring aggression were low IQ, lower scores on theory of mind tasks, internalising problems, exposure to maltreatment, poor educational attainment and oppositional behaviour. Discussion: Consistent with the proposed hypothesis, young people with psychosis and co-occurring aggression shared risk factors and correlates with both ’pure’ groups and showed some additional distinctive features. Conclusions: It is possible to identify psychosis and co-occurring aggressive behaviour in child and adolescent samples; many of the risk factors for the co-occurring pattern appeared similar to those identified in adult studies. Implication","abstract_has_math":false,"creators":["Khalid, Farah"],"institution":"King's College London","degree_name":"Doctor of Philosophy","degree_level":"Doctoral Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Maughan, Barbara","Ford, Tamsin"],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-5-1","date_published":"2013-5-1","updated_at":"2026-07-24T02:44:40Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:kclpure.kcl.ac.uk:studenttheses/659df988-9c1d-4aba-bd79-78f7d7c45690"],"render_values":[{"text":"oai:kclpure.kcl.ac.uk:studenttheses/659df988-9c1d-4aba-bd79-78f7d7c45690","href":null,"code":true}]}]},"links":{"outbound_url":"https://kclpure.kcl.ac.uk/portal/en/studentTheses/659df988-9c1d-4aba-bd79-78f7d7c45690","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Maughan, Barbara","Ford, Tamsin"]},{"key":"dc:creator","label":"Author","values":["Khalid, Farah"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2013-5-1"]},{"key":"dc:date.issued","label":"Date","values":["2013-5-1"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Social Genetic & Developmental Psychiatry"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["King's College London"]},{"key":"dc:relation.isreferencedby","label":"Dc Relation Isreferencedby","values":["https://kclpure.kcl.ac.uk/portal/en/studentTheses/659df988-9c1d-4aba-bd79-78f7d7c45690"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral Thesis"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["Doctor of Philosophy"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["oai:kclpure.kcl.ac.uk:studenttheses/659df988-9c1d-4aba-bd79-78f7d7c45690","https://kclpure.kcl.ac.uk/portal/en/studentTheses/659df988-9c1d-4aba-bd79-78f7d7c45690"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://kclpure.kcl.ac.uk/portal/files/12791099/Studentthesis-Farah_Khalid_2013.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Background: Despite evidence of an increased risk of violence among adults with psychosis, little is known about the relationship between psychosis and aggression in young people. Aim: To compare clinical characteristics and associated features in young people with co-occurring psychosis and aggression to those with psychosis or aggression alone. Hypothesis: Those with both psychosis and aggression will share risk factors and correlates with both ’pure’ groups. Method: Three samples were examined. The first (n=6,770), involved secondary data analysis and used information routinely collected on young people referred to the Maudsley Hospital over a 40 year period; the second study involved new data collection by the author, and focused on young people admitted to inpatient units (n=106); the third (n=2,232) involved secondary data analysis and used data from the Environmental Risk Longitudinal Twin Study, a non-referred community sample. Results: Comparisons of co-occurring cases with those with psychosis or aggression only suggested that co-occurring cases showed symptom profiles and risk factors typical of both ’pure’ conditions; in addition, they had higher rates of callous/unemotional traits and parental antisocial behaviour than either ’pure’ group. Independent predictors of psychosis and co-occurring aggression were low IQ, lower scores on theory of mind tasks, internalising problems, exposure to maltreatment, poor educational attainment and oppositional behaviour. Discussion: Consistent with the proposed hypothesis, young people with psychosis and co-occurring aggression shared risk factors and correlates with both ’pure’ groups and showed some additional distinctive features. Conclusions: It is possible to identify psychosis and co-occurring aggressive behaviour in child and adolescent samples; many of the risk factors for the co-occurring pattern appeared similar to those identified in adult studies. Implication"]},{"key":"dc:title","label":"Title","values":["Psychosis and aggression in childhood & adolescence: investigations in clinically referred, inpatient and general population samples"]}]}],"canonical_facts":{"dc:contributor.advisor":["Maughan, Barbara","Ford, Tamsin"],"dc:creator":["Khalid, Farah"],"dc:date":["2013-5-1"],"dc:date.issued":["2013-5-1"],"dc:description.abstract":["Background: Despite evidence of an increased risk of violence among adults with psychosis, little is known about the relationship between psychosis and aggression in young people. Aim: To compare clinical characteristics and associated features in young people with co-occurring psychosis and aggression to those with psychosis or aggression alone. Hypothesis: Those with both psychosis and aggression will share risk factors and correlates with both ’pure’ groups. Method: Three samples were examined. The first (n=6,770), involved secondary data analysis and used information routinely collected on young people referred to the Maudsley Hospital over a 40 year period; the second study involved new data collection by the author, and focused on young people admitted to inpatient units (n=106); the third (n=2,232) involved secondary data analysis and used data from the Environmental Risk Longitudinal Twin Study, a non-referred community sample. Results: Comparisons of co-occurring cases with those with psychosis or aggression only suggested that co-occurring cases showed symptom profiles and risk factors typical of both ’pure’ conditions; in addition, they had higher rates of callous/unemotional traits and parental antisocial behaviour than either ’pure’ group. Independent predictors of psychosis and co-occurring aggression were low IQ, lower scores on theory of mind tasks, internalising problems, exposure to maltreatment, poor educational attainment and oppositional behaviour. Discussion: Consistent with the proposed hypothesis, young people with psychosis and co-occurring aggression shared risk factors and correlates with both ’pure’ groups and showed some additional distinctive features. Conclusions: It is possible to identify psychosis and co-occurring aggressive behaviour in child and adolescent samples; many of the risk factors for the co-occurring pattern appeared similar to those identified in adult studies. Implication"],"dc:identifier":["oai:kclpure.kcl.ac.uk:studenttheses/659df988-9c1d-4aba-bd79-78f7d7c45690","https://kclpure.kcl.ac.uk/portal/en/studentTheses/659df988-9c1d-4aba-bd79-78f7d7c45690"],"dc:identifier.uri":["https://kclpure.kcl.ac.uk/portal/files/12791099/Studentthesis-Farah_Khalid_2013.pdf"],"dc:language":["eng"],"dc:publisher.department":["Social Genetic & Developmental Psychiatry"],"dc:publisher.institution":["King's College London"],"dc:relation.isreferencedby":["https://kclpure.kcl.ac.uk/portal/en/studentTheses/659df988-9c1d-4aba-bd79-78f7d7c45690"],"dc:title":["Psychosis and aggression in childhood & adolescence: investigations in clinically referred, inpatient and general population samples"],"dc:type":["Thesis"],"dc:type.qualificationlevel":["Doctoral Thesis"],"dc:type.qualificationname":["Doctor of Philosophy"]},"updated_at":"2026-07-24T02:44:40Z"}