Matthew W Gallagher

University of Houston | U of H, UH · Department of Psychology

The present study examined two potential mechanisms of change, hopelessness cognitions and habituation, in a randomized controlled trial of cognitive processing therapy (CPT) and prolonged exposure therapy (PE) for posttraumatic stress disorder (PTSD). Participants were 171 adult women with a current primary diagnosis of sexual assault related PTSD...

The present study examined temporal dependencies of change of panic symptoms and two promising mechanisms of change (self-efficacy and anxiety sensitivity) during an 11-session course of cognitive-behavior therapy (CBT) for Panic Disorder (PD). 361 individuals with a principal diagnosis of PD completed measures of self-efficacy, anxiety sensitivity...

OBJECTIVE: Current theories of optimism suggest that the tendency to maintain positive expectations for the future is an adaptive psychological resource associated with improved well-being and physical health, but the majority of previous optimism research has been conducted in industrialized nations. The present study examined 1) whether optimism...

This study further evaluates the efficacy of the Unified Protocol for Transdiagnostic Treatment of Emotional Disorders (UP). A diagnostically heterogeneous clinical sample of 37 patients with a principal anxiety disorder diagnosis was enrolled in a randomized controlled trial (RCT) involving up to 18 sessions of treatment and a 6-month follow-up pe...

Hope is a cognitive trait defined as the perceived capacity to identify strategies (pathways) and maintain motivation (agency) in the pursuit of goals. Hope is most commonly measured using the Adult Hope Scale (AHS). Past work has provided support for the factor structure and reliability of the AHS, but there is limited evidence of measurement inva...

Introduction The COVID‐19 pandemic posed a threat to public health and psychological functioning, with early studies documenting higher rates of psychopathology within the United States and globally. Hope and optimism promote adjustment and are associated with positive physical and mental health outcomes. Thus, individual differences in hope and op...

Background: African American/Black (hereafter referred to as Black) persons who smoke constitute a tobacco disparities group in the United States. Within the Black population, female smokers experience a disproportionate percentage of these disparities and are less likely to quit cigarettes than their male counterparts. Two factors implicated in f...

There is widespread empirical evidence that the COVID-19 pandemic contributed to elevated risk of mental and physical health symptoms and decreased quality of life. The present investigation sought to examine if individual differences in anxiety sensitivity was associated with mental health, psychosomatic, and well-being among a sample of US adults...

Background Black adults who smoke and have HIV experience immense stressors (eg, racial discrimination and HIV stigma) that impede smoking cessation success and perpetuate smoking-related health disparities. These stressors also place Black adults who smoke and have HIV at an increased risk of elevated interoceptive stress (eg, anxiety and uncomfor...

Objectives: In this study, the effectiveness of a couples-based group intervention to prevent intimate partner violence (IPV), Strength at Home Couples (SAH-C), was examined on a military installation relative to a comparison intervention, Supportive Prevention (SP). It was expected that greater reductions in use of physical, psychological, and sex...

BACKGROUND Black adults who smoke and have HIV experience immense stressors (eg, racial discrimination and HIV stigma) that impede smoking cessation success and perpetuate smoking-related health disparities. These stressors also place Black adults who smoke and have HIV at an increased risk of elevated interoceptive stress (eg, anxiety and uncomfor...

Objective: More than 550 million people speak Spanish and, yet, psychometric data on psychological instruments in Spanish lags. Given evidence of significant traumatic exposure and distress among Spanish speakers, the aim of the current study was to examine the factor structure of the Impact of Events Scale-Revised (IES-R), in a large sample of Spa...

Objective: Gratitude and hope are well-established predictors of well-being and buffers against posttraumatic stress disorder (PTSD) and anxiety symptoms. However, scarce literature exists that investigates these relationships in a Hispanic/Latino sample. The current study investigates gratitude’s and hope’s relationship to PTSD and anxiety symptom...

In 2017, Hurricane Harvey flooded more than 300,000 buildings causing an estimated $125 billion in damages and resulting in 68 deaths (National Hurricane Center). This actual or threatened loss of life and physical harm led many to report negative effects on mental well-being and greater mental illness. However, many individuals have been able to e...

Objective: Firefighters represent an understudied population with high rates of chronic exposure to stress and potentially traumatic events. Thus, there is a need to identify modifiable resilience factors to address posttraumatic stress disorder (PTSD) symptoms (PTSD) and chronic pain in firefighters to inform prevention and intervention efforts....

Pain tolerance, defined as the ability to withstand physical pain states, is a clinically important psychobiological process associated with several deleterious outcomes, including increased pain experience, mental health problems, physical health problems, and substance use. A significant body of experimental work indicates that negative affect is...

Background: Electronic cigarette (ECIG) use has become a popular method for nicotine delivery. Combustible cigarette (CC) cessation or reduction are the primary reasons for ECIG uptake among adults. Yet, most CC smokers who initiate ECIG use do not fully transition from CC to ECIG, despite intending to quit CC completely. Retraining approach bias,...

Background: In the United States, Hispanic/Latin American (H/L) populations are typically conceptualized as a homogenous group despite their well-documented heterogenous identities. For example, H/Ls tend to vary in skin-tone and consequently there is variability in their racialized experiences. Factors, such as stress, have been associated with po...

Black smokers demonstrate higher nicotine dependence and experience higher rates of smoking-related diseases and mortality relative to European American/White smokers. A potential factor relevant to race-specific smoking health disparities may be smoking motives (i.e., motivational basis of smoking). Yet, little research has been conducted to under...

Black individuals who smoke in the United States experience health disparities related to tobacco use (e.g., greater nicotine dependence, less success in quitting smoking) and interoceptive distress (e.g., somatic symptoms, anxiety). Individual difference factors that amplify interoceptive distress and contribute to poorer smoking behaviors and out...

Background: Clear health disparities have emerged in rates of COVID-19 exposure, hospitalization, and death among Black, Hispanic, and American Indian (BHAI) individuals, relative to Non-Hispanic White (NHW) individuals. BHAI populations have been disproportionately affected by lower behavioral health access and heightened negative mental health o...

Background The COVID-19 pandemic has had a profound impact on health and well-being worldwide. There is increasing research seeking to better understand the psychological impact of COVID-19 experiences. However, this research has largely been limited in size and scope.Methods The present study examined longitudinal trajectories of COVID-19 experien...

Background Black smokers have greater difficulty in quitting and higher rates of smoking-related diseases and disabilities than the general population. The smoking disparities experienced by this group are, in part, a consequence of multiple chronic life stressors (eg, racial discrimination) that engender increased exposure to interoceptive stress...

BACKGROUND Black smokers have greater difficulty in quitting and higher rates of smoking-related diseases and disabilities than the general population. The smoking disparities experienced by this group are, in part, a consequence of multiple chronic life stressors (eg, racial discrimination) that engender increased exposure to interoceptive stress...

Obesity is one the fastest growing public health problems related to numerous chronic diseases and frequently co-occurs with negative mood states. One promising approach to address the heterogeneity of affective vulnerabilities and obesity is to focus on processes (e.g. anxiety sensitivity [AS]) that underpin both conditions. Thus, this study aimed...

The present meta-analysis consolidated research examining how posttraumatic growth relates to global anxiety and depression. Articles were identified by searching PTSDpubs, PsycINFO, PubMed, and ProQuest Dissertations and Theses databases, as well as searching the reference sections of relevant review articles. Meta-analytic review of 129 included...

A rising interest in the psychological community in resilience has spurred research examining psychological resources that promote resilience to psychopathologies such as posttraumatic stress disorder (PTSD). One such psychological resource is gratitude, or one’s perception of a positive outcome resulting from an outside entity. The present study i...

Background The COVID-19 pandemic has had a profound negative impact on mental health symptoms and daily life functioning across the United States and worldwide. Past work has revealed that perceived stress relates to poorer outcomes, however, little work to date has examined factors that may exacerbate these outcomes, and no work to date has examin...

Alcohol Use Disorder (AUD) and anxiety disorders (ANX) are each highly prevalent and frequently co-occur, resulting in a complex clinical presentation. The existing literature to date has not yet identified how to best treat comorbid AUD/ANX, partially due to limitations in understanding what factors and mechanisms are implicated in their co-occurr...

Introduction Electronic media devices are ubiquitous in modern society and believed to adversely affect nighttime sleep. Cross-sectional research provides evidence of robust associations but prospective findings are limited and mixed. In this study, we examined the impact of specific types of electronics devices and overall use on objective and sub...

The conditions and populations for which anxiety sensitivity (AS; i.e., the tendency to interpret unpleasant physiological sensations as dangerous) relates to adolescent alcohol use is unclear. This study tested latent-variable cross-lagged panel modeling of AS-alcohol relations in a racially/ethnically heterogenous longitudinal youth cohort (N=3,3...

Background Cigarette smoking is the leading preventable cause of death and disability globally. Most smokers want to quit, and most make a serious quit attempt each year. Nevertheless, more than 95% of cessation attempters relapse within six months. Thus, alternative interventions are needed to combat this major public health concern. Objective: Th...

Positive thinking is a source of mental health. Hope, optimism, and generalized self-efficacy (GSE) are three factors of positive thinking that are strongly correlated but theoretically distinct. Specifically, these positive thinking factors covary with subjective well-being (composed of positive affect, negative affect, and satisfaction with life;...

Objective: Sexual aggression between intimate partners is a serious problem. This study examined this problem in returning male veterans and their female partners, and the effectiveness of an intervention for intimate partner violence (IPV) in preventing sexual aggression using data gathered during a randomized controlled trial. Method: Rates of...

Hazardous drinkers with emotional vulnerabilities (e.g., elevated anxiety sensitivity) remain an underserved group. This study aimed to evaluate the feasibility, acceptability, and initial efficacy of a single session remotely-delivered personalized feedback intervention (PFI) targeting alcohol (mis)use and anxiety sensitivity among college student...

Dropout from psychotherapy is common and can have negative effects for patients, providers, and researchers. Better understanding when and why patients stop treatment early, as well as actionable factors contributing to dropout, has the potential to prevent it. Here, we examine dropout from a large randomized controlled trial of transdiagnostic ver...

COVID-19 has had a profound impact on health and well-being worldwide. There is an increasing need to understand the psychological impact of COVID-19, particularly associations with posttraumatic stress. This cross-sectional study examined associations between COVID-19 and posttraumatic stress among adults utilizing structural equation modeling met...

The COVID-19 pandemic has had an adverse effect on anxiety and depression symptoms and disorders in the United States and worldwide. As such, there is considerable interest in better understanding the relationship between COVID-19 and anxiety and depressive disorders. Although individual differences in perceived stress have shown to be related to a...

SBEH_A_1877341 Hope is a cognitive trait that predicts both resilience to and recovery from anxiety and stress-related disorders. The present study examines the prospective associations of hope with subsequent anxiety, stress, and well-being during the COVID-19 pandemic. Perceived emotional control, a transdiagnostic vulnerability factor, was also...

Electronic devices are routinely associated with adverse effects on sleep; however, prospective studies among healthy children are unavailable. This study examined relationships among specific and total electronic device use within the hour before bed and same-night sleep patterns among 55 pre-pubertal children (7-11 years) without medical, psychia...

A persistent and significant barrier to the diagnosis and treatment of borderline personality disorder (BPD) in adolescents is clinician reluctance to label an adolescent with a stigmatized, intractable, treatment-resistant diagnosis. The goal of the current study was to evaluate this claim by examining the 18-month longitudinal course of borderlin...

Psychiatric comorbidities are common throughout clinical practice. This article discusses the prevalence and etiology of psychiatric comorbidities, in addition to commenting on clinical implications and future directions. Modern comorbidity research frequently evaluates whether psychiatric comorbidity reflects the presence of two or more distinct c...

Background Obesity and chronic low back pain often co-occur and are associated with psychosocial and physical impairments such as weight-related impairment and fatigue. Yet, there is little understanding of psychological factors that may be associated with weight-related impairment and fatigue (a psychosocial factor) among this vulnerable populatio...

Background The COVID-19 pandemic has had a profound impact on health and well-being worldwide and there is increasing recognition of the need to understand the psychological impact of COVID-19 experiences and stress in addition to the physical health consequences.Methods The present study examined how experiences related to COVID-19 and associated...

Western samples have demonstrated greater optimism than East Asian samples, however, the factor structure of the Life Orientation Test (LOT) is not always consistent. Measurement properties of scales may differ across cultures, potentially biasing estimation of group differences. This study examined the factor structure and measurement invariance o...

Objective To examine whether the Unified Protocol (UP) remains equivalent to single-disorder protocols (SDPs) in the treatment of anxiety disorders at 12-month follow-up. Method We report results from the 12-month follow-up of a recent randomized equivalence trial [1]. Data are from 179 participants (55.31% female sex, 83.24% White, average age 30...

Natural disasters can lead to mental health problems, such as posttraumatic stress disorder (PTSD). Higher levels of loss and/or disruption and prior trauma exposure constitute risk factors for mental illness, whereas protective factors, including hope and resilience, support positive functioning. The present cross‐sectional study used structural e...

Pain-related anxiety, defined as fear of pain and pain-related sensations, is a transdiagnostic individual difference factor associated with pain-related problems, addictive disorders, and physical impairment among nonclinical and clinical populations. Pain-related anxiety is most commonly measured using the Pain Anxiety Symptoms Scale-20 (PASS-20)...

Objectives: The opioid epidemic is a significant public health problem that is associated with overdose and death. The increase in opioid-related problems can largely be attributed to increases in opioid prescriptions for the treatment of chronic pain. Unfortunately, there is not a consensus on a definition of opioid misuse in the context of chron...

Objective Dual use of combustible and electronic cigarettes (e-cigarettes) is increasing in prevalence and may be related to an increased risk for health problems. Accordingly, dual users represent a particularly vulnerable group. Neuroticism is an individual difference factor that demonstrates robust relations to combustible cigarette use. Yet, no...

Integrated treatments for hazardous drinking and anxiety/depression are virtually nonexistent. Anxiety sensitivity (AS) is a common mechanism for both anxiety/depression and hazardous drinking. This article presents a study protocol for the development and testing of an integrated remotely delivered AS/hazardous drinking personalized feedback inter...

Cognitive behavioral therapy (CBT) has been found to be very effective in reducing many forms of mental illness, but much less is known about whether CBT also promotes mental health or well-being. The goals of the present study were to (a) quantify the magnitude and timing of changes in overall well-being and specific facets of well-being during di...

This chapter outlines a select number of some of the most extensively studied and widely used models and measures of well-being and quality of life. As the field of positive psychology has quickly grown in the past two decades, the number of assessment tools for quantifying positive mental health and other positive aspects of functioning has rapidl...

Introduction: Although subjective sleep quality has been associated with combustible cigarette use, little is known about its role in electronic cigarette (e-cigarette) use or beliefs about use. To address this gap, the current study examined subjective sleep quality among adult e-cigarette users in relation to e-cigarette dependence, perceived ri...

Objective: The present meta-analysis consolidated research examining how positive expectancies (e.g., hope, self-efficacy, and optimism) may protect against the development of posttraumatic stress disorder (PTSD). Method: Articles were identified by searching PILOTS, PsycINFO, PubMed, and ProQuest Dissertations and Theses databases. Results: A...

Background: As extreme weather events increasingly affect the global population, it is valuable to understand their impacts on mental health. Extending upon previous theory and research, the current study examined a hypothesized framework of direct and indirect pathways. Exposure and psychosocial resource factors at the time of the hurricane/flood...

Hope is a trait that represents the capacity to identify strategies or pathways to achieve goals and the motivation or agency to effectively pursue those pathways. Hope has been demonstrated to be a robust source of resilience to anxiety and stress and there is limited evidence that, as has been suggested for decades, hope may function as a core pr...

Although past work has documented reduction in alcohol use severity among smokers following smoking cessation treatment, little is known regarding factors associated with this reduction. The current study sought to examine relations between trajectories of change in anxiety sensitivity and non-targeted alcohol use severity from baseline to one year...

Borderline personality pathology is a serious mental illness characterized by pervasive interpersonal deficits that onset during adolescence. Risk factors for borderline personality pathology include maladaptive interpersonal dynamics within attachment relationships. Given the shift toward emphasizing romantic relationships during adolescence as an...

A significant portion of firefighters are military veterans, and both populations experience high rates of trauma and posttraumatic stress disorder (PTSD) symptomatology. We investigated main and interactive effects of military veteran status (MVS) and emotion regulation difficulties (ERD) with regard to PTSD symptom severity in firefighters. Covar...

Sleep disturbance is related to a variety of health issues and represents a prominent occupational concern among firefighters. Two potential predictors relevant to disturbed sleep are alcohol use and distress tolerance, which refers to the perceived ability to withstand negative emotional states. Main and interactive effects of alcohol use and dist...

Optimism and mastery are two cognitive traits that involve positive expectations for the future and that have been demonstrated to be important predictors of reduced anxiety as well as superior coping and physical health in many populations, including cancer survivors. There is limited research, however, examining the unique effects of these traits...

Objective Tobacco dependence treatment is recognized as a dynamic, chronic process comprised of several specific phases. Of these phases, the Cessation phase is the most critical as it has demonstrated the strongest relation to quit success. Yet, little is understood about smoking trajectories during this period. The current study aimed to address...

Objectives: Latinx individuals face substantial health disparities, particularly in the areas of mental health and substance use. Among Latinx in the U.S., alcohol is the most widely abused substance and is associated with a range of negative consequences. Among Latinx, limited past work has linked trauma exposure/symptoms to alcohol misuse, howeve...

Firefighters are at elevated risk for stress, posttraumatic stress disorder (PTSD) symptomatology, and alcohol use, the combination of which is highly complex and difficult-to-treat. The current study examined the indirect effects of perceived stress on probable alcohol misuse via posttraumatic stress severity using structural equation modeling. Pa...

Objective: Cigarette smoking remains the leading preventable cause of death in the United States, and withdrawal symptoms are central to the maintenance of tobacco use. Previous research suggests that individual differences in the propensity to experience negative affect may be related to more severe withdrawal symptoms. However, little research h...

Background: Firefighters are at elevated risk for posttraumatic stress and alcohol use, with research indicating that individuals with posttraumatic stress are likely to use alcohol as a coping strategy. A behavioral mechanism of clinical relevance to these associations is sleep disturbance. Thus, it was hypothesized that higher posttraumatic stre...

Anxiety sensitivity, defined as the fear of anxiety and arousal-related sensations, has been among the most influential cognitive-based transdiagnostic risk and maintenance factors in the study and treatment of emotional and related disorders. The currently available anxiety sensitivity measures are limited by their length. Specifically, the length...

Background: Past work has documented bidirectional associations between pain and cigarette smoking behaviors such that those who smoke evidence greater pain, and those in pain tend to smoke more. However, such work has not focused on the role of pain in relation to negative affect, which plays an important role during cessation attempts. Objectiv...

Background: Firefighters are chronically exposed to traumatic events. Relatedly, past work has documented high rates of psychiatric problems, such as posttraumatic stress symptoms and depression, among firefighters. Less is known regarding anxiety symptoms among firefighters. Moreover, little work has examined risk/maintenance factors related to t...

Background: Posttraumatic stress disorder (PTSD) and substance use disorder (SUD) co-occur in military veterans and other populations. Objective: To conduct a randomized controlled trial to compare a new past-focused treatment (Creating Change; CC), to a well-established, evidence-based present-focused treatment for PTSD/SUD (Seeking Safety; SS)...

Background Expressive writing interventions are shown to confer health benefits for Caucasian cancer survivors. However, few studies reported improved quality of life or studied ethnic minorities. Purpose The study evaluated whether a culturally sensitive expressive writing intervention improved quality of life. Methods Chinese-speaking breast ca...

Background and objectives: In light of increasing rates of cannabis use and use-related problems, efforts to understand malleable psychological vulnerability factors related to use and related problems remain important as they can inform prevention and treatment efforts. Recent data indicate that false safety behaviors (FSB; ie, behaviors that may...

In Reply We appreciate the opportunity afforded by Dr Leichsenring’s letter to provide more detail on the methods of our randomized clinical trial¹ that was precluded owing to space limitations. We also endeavored to follow recommendations specific to examining equivalence² and generally for increasing reproducibility of psychological research.³ Ou...

Research has shown that positive emotions are important to optimal health, functioning, and well-being, and contribute to resilience against psychological dysfunction. Many clinical disorders, particularly anxiety and mood disorders, are associated with deficits in positive emotion that may contribute to disorder severity and prevent full recovery,...

Objective: Prevailing theory and research suggests the psychological and physiological discomfort associated with tobacco withdrawal may play a formative role in the risk of cessation failure. Yet, research elucidating cognitive-affective vulnerability characteristics that contribute to increased tobacco withdrawal severity during periods of plann...

This study examines age differences in hope, from age 15 to 80 years, and the short-term stability of hope using longitudinal data collected from 1453 Portuguese participants. Hope levels were higher in the middle adult groups than in the adolescent, emerging adult and older adult groups, and reached a peak between early-middle adulthood (ages 30–4...

1 Objective The present study examined the impact of expressive writing on reducing posttraumatic stress disorder symptoms (PTSS) and facilitating posttraumatic growth (PTG) in Chinese American breast cancer survivors. 2 Method Ninety‐six women who had completed primary treatments for breast cancer were randomly assigned to a cancer experience fac...

Objective: Posttraumatic stress symptoms (PTSS) are common among breast cancer survivors. However, the association and the underlying mediating mechanism between psychosocial factors and PTSS were rarely investigated among breast cancer survivors. Previous studies have suggested the importance of emotional expression in cancer survivors' PTSS. Thi...