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Dive into the research topics where Guillermo Vallejo-Seco is active.

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Featured researches published by Guillermo Vallejo-Seco.


Schizophrenia Research | 2009

Symptomatic and functional outcome in youth at ultra-high risk for psychosis: A longitudinal study

Serafín Lemos-Giráldez; Oscar Vallina-Fernández; Purificación Fernández-Iglesias; Guillermo Vallejo-Seco; Eduardo Fonseca-Pedrero; Mercedes Paíno-Piñeiro; Susana Sierra-Baigrie; Pilar García-Pelayo; Clara Pedrejón-Molino; Sandra Alonso-Bada; Ana Maria Gutiérrez-Pérez; Jose Angel Ortega-Ferrández

The current report assesses the clinical, functioning and demographic data of a cohort enrolled in the P3 prevention program for psychosis; a Spanish National Health System and Ministry of Science funded program. Comparisons are made between those individuals who had converted to psychosis and those who had not at 3years after an average of 24 treatment sessions. Subjects included 61 participants meeting Structured Interview for Prodromal Syndromes criteria, with ages ranging from 17 to 31, and all meeting criteria for ultra-high risk of psychosis. Prospective follow-up data are reported for patients re-evaluated at 1 and 3years. At 1-year follow-up, the conversion rate to psychosis was 18%, but increased to 23% at 3-year follow-up. The converted sample was older than the non-converted sample and more likely to have higher ratings on subsyndromal psychotic (positive and disorganized), negative and general symptoms, and lower levels of functioning at baseline assessment. Analyses of change over time indicated a clear clinical improvement in both clinically stable patients and in those who showed a transient psychotic state over time. No gender differences in symptom or functioning levels at the three follow-up time points were found; however, the interactions among conversionxgenderxSOPS total scorextime points significantly reflect that the growth profiles of the four groups (no conversion males, no conversion females, conversion males and conversion females) in the SOPS total score are not parallel and that, consequently, the four groups involved different patterns of change over time, males experiencing faster and longer deterioration when psychotic symptoms arise.


Experimental and Clinical Psychopharmacology | 2015

Contingency management for cigarette smokers with depressive symptoms.

Roberto Secades-Villa; Guillermo Vallejo-Seco; Olaya García-Rodríguez; Carla López-Núñez; Sara Weidberg; Alba González-Roz

Despite depressive symptoms being very common among smokers from the general population, few studies have examined the effects of depressive symptoms on smoking treatment outcomes, and even less research has been carried out in the context of contingency management (CM). The authors conducted a secondary analysis to assess the interrelation between treatment condition, depressive symptoms and treatment outcomes among treatment-seeking smokers. The sample was made up of 147 treatment-seeking smokers who were randomly allocated 2 treatment conditions: cognitive behavioral treatment (CBT; n = 74), or CBT + CM (n = 73). CBT was applied in 1-hr group-based sessions over 6 weeks. The CM protocol was voucher-based with maximum earnings of €300 (US


Comprehensive Psychiatry | 2015

Measuring stages of recovery from psychosis

Serafín Lemos-Giráldez; Leticia García-Álvarez; Mercedes Paino; Eduardo Fonseca-Pedrero; Oscar Vallina-Fernández; Guillermo Vallejo-Seco; Purificación Fernández-Iglesias; Nuria Ordóñez-Camblor; Jessica Solares-Vázquez; Laia Mas-Expósito; Ana Barajas; Retta Andresen

339). Depressive symptoms were assessed using the Beck Depression Inventory-II. Smoking abstinence was verified though cotinine and carbon monoxide. Several analyses were conducted to explore the effect of treatment condition and baseline depressive symptoms on treatment outcomes, as well as the effect of treatment condition and smoking status on depressive symptoms. The CBT + CM condition was more effective than CBT, independent of depressive symptoms. The presence of depressive symptoms decreased the number of days of continuous smoking abstinence. Participants with a greater number of days of continuous smoking abstinence had fewer depressive symptoms than those with fewer days of continuous smoking abstinence. Findings suggest that health care providers should consider encouraging their patients with depressive symptoms to seek smoking cessation services that include both smoking cessation protocols and behavioral activation for mood management, thus maximizing both smoking and depressive outcomes.


Addictive Behaviors | 2018

In-treatment cigarette demand among treatment-seeking smokers with depressive symptoms

Sara Weidberg; Guillermo Vallejo-Seco; Alba González-Roz; Ángel García-Pérez; Roberto Secades-Villa

BACKGROUND Mental health consumers invite us to abandon the pathology model, which is tied to pessimism, and instead to embrace a model of personal recovery that goes beyond being free from symptoms, and involves self-management of the illness. The Stages of Recovery Instrument (STORI) is a measure developed from the perspective of consumers according to a conceptual five-stage model of recovery. AIMS The main aim of this work was to study the psychometric properties of the STORI, but we also set out to compare the stages of recovery in our sample with the five-stage model in the sample with which the scale was developed. METHODS Our sample consisted of 95 people diagnosed with schizophrenia-spectrum psychoses, with a mean age of 34.74 (SD=9.25). RESULTS The STORI scores showed adequate psychometric properties in this sample. Cluster analysis indicated that the three-cluster model fitted the data better than the five-cluster model. Internal consistency of the STORI scores ranged between .83 and .87. STORI stages were associated with Recovery Styles Questionnaire scores. DISCUSSION The results provide empirical validation of the STORI in other countries. Empirical evidence revealed that the stages of recovery found in our own and other clinical samples differ from those found in the samples with which the scale was developed.


Journal of Child & Adolescent Substance Abuse | 2005

Family Risk Factors for Adolescent Drug Misuse in Spain.

Roberto Secades-Villa; José Ramón Fernández-Hermida; Guillermo Vallejo-Seco

INTRODUCTION Despite previous evidence supporting the use of the Cigarette Purchase Task (CPT) as a valid tool for assessing smoking reinforcement, research assessing how environmental changes affect CPT performance is scarce. AIMS This study addressed for the first time the differential effect of treatment condition [Cognitive Behavioral Treatment (CBT) + Behavioral Activation (BA) versus CBT + BA + Contingency Management (CM)] on cigarette demand among treatment seeking smokers with depressive symptoms. It also sought to assess whether reductions in smoking consumption arranged over the course of an intervention for smoking cessation impact on in-treatment cigarette demand. METHOD Participants were 92 smokers with depressive symptoms from a randomized clinical trial that received eight weeks of either CBT + BA or CBT + BA + CM. Individuals completed the CPT 8 times; the first during the intake visit and the remaining 7 scheduled once a week in midweek sessions. Cotinine samples were collected in each session. RESULTS Participants receiving CBT + BA + CM showed higher reduction in cigarette demand across sessions than participants receiving CBT + BA, although this comparison was only significant for the intensity index (p = .004). Cotinine was positively related to cigarette demand (all p values < .001), although this association became less prominent across sessions. In-treatment cotinine decreases were associated with demand reductions (all p values < .001), but this association was not significant for elasticity. CONCLUSIONS Reductions in nicotine intake arranged over the course of an intervention for smoking cessation impact in-treatment cigarette demand.


Anales De Psicologia | 2014

Validez estructurada para una investigación cuasi-experimental de calidad: se cumplen 50 años de la presentación en sociedad de los diseños cuasi-experimentales

Paula Fernández-García; Guillermo Vallejo-Seco; Pablo Livacic-Rojas; Ellián Tuero-Herrero


Archive | 2018

The Responsibility of Estimating Missing Data

María Paz Fernández-García; Guillermo Vallejo-Seco; Pablo Livacic-Rojas; Ellián Tuero-Herrero


Frontiers in Psychology | 2018

The (Ir)Responsibility of (Under)Estimating Missing Data

María Paz Fernández-García; Guillermo Vallejo-Seco; Pablo Livacic-Rojas; Ellián Tuero-Herrero


Aquichan | 2015

Valores pessoais em estudantes e profissionais de enfermagem

Francisca Rosa Jiménez-López; Jesús Gil Roales-Nieto; Guillermo Vallejo-Seco; Gustavo René García-Vargas; María Teresa Lorente-Molina; Genoveva Granados-Gámez


Aquichan | 2015

Valores personales en estudiantes y profesionales de enfermería

Francisca Rosa Jiménez-López; Jesús Gil Roales-Nieto; Guillermo Vallejo-Seco; Gustavo René García-Vargas; María Teresa Lorente-Molina; Genoveva Granados-Gámez

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