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El carácter transdiagnóstico de las intrusiones mentales/ Transdiagnostic nature of unwanted mental intrusions

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El carácter transdiagnóstico de las intrusiones mentales/ Transdiagnostic nature of unwanted mental intrusions

dc.contributor.advisor	Belloch Fuster, Amparo
dc.contributor.author	Pascual Vera, Belén
dc.contributor.other	Departament de Personalitat, Avaluació i Tract. Psicologics	es_ES
dc.date.accessioned	2019-07-16T11:14:59Z
dc.date.available	2019-10-15T04:45:05Z
dc.date.issued	2019	es_ES
dc.date.submitted	26-07-2019	es_ES
dc.identifier.uri	https://hdl.handle.net/10550/70838
dc.description.abstract	Unwanted mental intrusions (UMIs) and their functional consequences had been proposed as symptom dimensions in current cognitive models of Obsessive-Compulsive Disorder (OCD), Body Dysmorphic Disorder (BDD), Illness Anxiety/Hypochondriasis (IA/H) and Eating Disorders (EDs). The main purpose of this doctoral dissertation was to ascertain the transdiagnostic nature of UMIs, above and beyond their specific contents, i.e., obsessional, appearance defects, illness and death, and eating disorders-related. To this end, the Questionnaire of Unpleasant Intrusive Thoughts (QUIT) was designed, and, based on it, four studies were conducted. Studies 1 and 2 examined the transdiagnostic nature of UMIs, based on their respective frequencies and disturbances and the similarities and differences in the functional links among the four UMIs that participants selected as the most upsetting. A non-clinical Spanish population (N=438) and patients with a diagnosis of OCD (N=39) participated in these studies. Study 3 searched for the putative etiopathogenic role of UMIs and examined whether individuals with OCD and those who are vulnerable to the disorder experience more UMIs than people who are not vulnerable to OCD. In this study subjects without risk of OCD (n=68), at risk of OCD (n=71), and OCD patients (n=39) participated. Study 4 examined the transdiagnostic nature of UMIs across different countries and socio-cultural contexts. The objectives were to analyze the putative cultural differences that might influence the universality of UMIs and their form across cultures, as well as their hypothesized transdiagnostic value. Non-clinical participants (N=1473) from seven countries in the Middle East, Europe, and South America participated in this study. Results support the transdiagnostic nature of unwanted mental intrusions in the general population from different countries and cultural contexts, as well as in patients with OCD, revealed by: a) the high percentage rates of participants who experienced the four types of UMIs; b) the relationships among the UMIs in terms of their frequency and the disturbance they provoked; and c) the similarities in the frequency and disturbance due to the UMIs and in the functional consequences of the most disturbing UMIs. The etiopathogenic role of intrusions was supported by: a) the associations between the UMIs and their respective clinical measures; b) the predictive power of intrusions to explain scores on symptoms of these disorders; and c) the increasing tendency to experience all UMIs among individual at risk for OCD, compared to individuals with no risk of OCD. To conclude, the transdiagnostic nature of UMIs across OCD, BDD, IA/H and EDs could help to explain the phenomenological similarities and comorbidities found among these disorders, supporting the inclusion of IA/H and BDD in OC-spectrum disorders. The QUIT can be reliably used as a screening instrument to detect vulnerable individuals in different contexts and cultures.	en_US
dc.description.abstract	Unwanted mental intrusions (UMIs) and their functional consequences had been proposed as symptom dimensions in current cognitive models of Obsessive-Compulsive Disorder (OCD), Body Dysmorphic Disorder (BDD), Illness Anxiety/Hypochondriasis (IA/H) and Eating Disorders (EDs). The main purpose of this doctoral dissertation was to ascertain the transdiagnostic nature of UMIs, above and beyond their specific contents, i.e., obsessional, appearance defects, illness and death, and eating disorders-related. To this end, the Questionnaire of Unpleasant Intrusive Thoughts (QUIT) was designed, and, based on it, four studies were conducted. Studies 1 and 2 examined the transdiagnostic nature of UMIs, based on their respective frequencies and disturbances and the similarities and differences in the functional links among the four UMIs that participants selected as the most upsetting. A non-clinical Spanish population (N=438) and patients with a diagnosis of OCD (N=39) participated in these studies. Study 3 searched for the putative etiopathogenic role of UMIs and examined whether individuals with OCD and those who are vulnerable to the disorder experience more UMIs than people who are not vulnerable to OCD. In this study subjects without risk of OCD (n=68), at risk of OCD (n=71), and OCD patients (n=39) participated. Study 4 examined the transdiagnostic nature of UMIs across different countries and socio-cultural contexts. The objectives were to analyze the putative cultural differences that might influence the universality of UMIs and their form across cultures, as well as their hypothesized transdiagnostic value. Non-clinical participants (N=1473) from seven countries in the Middle East, Europe, and South America participated in this study. Results support the transdiagnostic nature of unwanted mental intrusions in the general population from different countries and cultural contexts, as well as in patients with OCD, revealed by: a) the high percentage rates of participants who experienced the four types of UMIs; b) the relationships among the UMIs in terms of their frequency and the disturbance they provoked; and c) the similarities in the frequency and disturbance due to the UMIs and in the functional consequences of the most disturbing UMIs. The etiopathogenic role of intrusions was supported by: a) the associations between the UMIs and their respective clinical measures; b) the predictive power of intrusions to explain scores on symptoms of these disorders; and c) the increasing tendency to experience all UMIs among individual at risk for OCD, compared to individuals with no risk of OCD. To conclude, the transdiagnostic nature of UMIs across OCD, BDD, IA/H and EDs could help to explain the phenomenological similarities and comorbidities found among these disorders, supporting the inclusion of IA/H and BDD in OC-spectrum disorders. The QUIT can be reliably used as a screening instrument to detect vulnerable individuals in different contexts and cultures.	es_ES
dc.format.extent	197 p.	es_ES
dc.language.iso	en	es_ES
dc.subject	unwanted mental intrusions	es_ES
dc.subject	intrusive thoughts	es_ES
dc.subject	trastorno obsesivo-compulsivo	es_ES
dc.subject	transdiagnóstico	es_ES
dc.subject	intrusiones mentales no deseadas	es_ES
dc.subject	trastorno dismórfico corporal	es_ES
dc.subject	hipocondría	es_ES
dc.subject	trastornos alimentarios	es_ES
dc.subject	obsessive-compulsive disorder	es_ES
dc.subject	body dysmorphic disorder	es_ES
dc.subject	hypochondriassis	es_ES
dc.subject	transdiagnostic	es_ES
dc.subject	eating disorders	es_ES
dc.title	El carácter transdiagnóstico de las intrusiones mentales/ Transdiagnostic nature of unwanted mental intrusions	es_ES
dc.type	doctoral thesis	es_ES
dc.subject.unesco	UNESCO::PSICOLOGÍA	es_ES
dc.embargo.terms	3 months	es_ES