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Full-Text Articles in Psychology

A Comparison Of Fixed Pay, Piece-Rate Pay, And Bonus Pay When Performers Receive Tiered Goals, Alejandro Ramos Jun 2022

A Comparison Of Fixed Pay, Piece-Rate Pay, And Bonus Pay When Performers Receive Tiered Goals, Alejandro Ramos

Dissertations

The purpose of this study was to compare the performance of participants under three pay systems when all were given five tiered goals. Seventy-one undergraduate students were randomly assigned to receive either fixed pay, base pay with bonuses, or piece-rate pay. Over the course of six 45-minute sessions, one of which served as a covariate, participants engaged in a computerized simulated medical record data entry task. The primary dependent variable was the average number of correctly completed medical records per session. An increasing relationship was expected to be found between the three groups with respect to the number of correctly …


Establishing Auditory Discrimination And Echoic Stimulus Control With An Auditory Matching Procedure, Clare Christe Aug 2020

Establishing Auditory Discrimination And Echoic Stimulus Control With An Auditory Matching Procedure, Clare Christe

Dissertations

A generalized auditory matching repertoire is considered an early milestone in the development of verbal behavior (Greer & Keohane, 2006). Previous literature has demonstrated that the auditory matching (AM) protocol can improve echoics in individuals with developmental delays (Brown, 2005; Choi, Greer & Keohane, 2015; Du, Speckman, Medina, & Cole-Hatchard, 2017). However, some children experience difficulties with the match-to-sample (MTS) format of the AM protocol, if they are unable to perform delayed MTS tasks.

One alternative to MTS is the go/no-go procedure (Serna, Dube, & McIlvane, 1997), which requires the student to make a simple discrimination (i.e., same/different) between two …


Measuring Contextual Factors Associated With Experiential Avoidance Using A Behavior Analogue Paradigm, Meaghan M. Lewis Aug 2019

Measuring Contextual Factors Associated With Experiential Avoidance Using A Behavior Analogue Paradigm, Meaghan M. Lewis

Dissertations

The purpose of the present study was to investigate the relationship between levels of state and trait experiential avoidance across two different contexts using behavior analogue methodology. Performance on the cold pressor task (threshold, tolerance, endurance, and intensity; Zettle et al., 2012) was compared to performance on a modified version of the Trier Social Stress Test (TSST; Kirschbaum et al., 1993) to obtain a behavioral measure of experiential avoidance that was standardized across these four behavioral indices. Data were collected from a convenience sample of undergraduate students (N = 133) from college classrooms on the campus of Western Michigan University. …


Primary Care Physician Delivered Brief Behavioral Intervention For Adult Obesity And Associated Health Conditions, Julia C. Huston Aug 2018

Primary Care Physician Delivered Brief Behavioral Intervention For Adult Obesity And Associated Health Conditions, Julia C. Huston

Dissertations

Obesity is a chronic health condition with prevalence rates that have continued to rise steadily over the past 30 years to the point that it has now been declared a global epidemic and a serious public health concern. Obesity is associated with significant physical and economic costs, primarily resulting from co-occurring health conditions that increase the risk of morbidity including type II diabetes, hypertension, dyslipidemia, stroke, coronary heart disease, and respiratory problems. Despite the dissemination of several obesity treatments, including pharmacotherapy, lifestyle modification, and bariatric surgery, the prevalence and severity of obesity continues to rise. Federal guidelines recommend the use …


Treatment Preference, Changes In Preference, And Quality Of Life, Chelsea Sage-Germain Aug 2018

Treatment Preference, Changes In Preference, And Quality Of Life, Chelsea Sage-Germain

Dissertations

The current study investigates whether treatment preferences prior to beginning treatment are different from treatment preferences at later points in treatment, and whether preferences are related to treatment outcome. While research to date supports the notion that matching clients to treatment in line with their preferences can improve retention and outcomes, results have been equivocal. Further, this research is typically conducted by measuring preferences just one time, prior to starting treatment. It is conceivable that preferences for treatment change over time as patients become more knowledgeable about their presenting problems and about the therapy process. A total of 969 participants …


The Effects Of Peer Observation On Teacher Intervention Integrity, Garrett D. Warrilow Jun 2018

The Effects Of Peer Observation On Teacher Intervention Integrity, Garrett D. Warrilow

Dissertations

The observer effect is a term used to describe a process during which an observer's behavior changes as they measure the behavior of another individual. The observer effect has been widely studied in organizational behavior management but has limited research with teachers in schools. The current study sought to use the observer effect as part of a teacher training package by evaluating the effects of peer observations on an observing teacher's implementation integrity of components of a Positive Behavioral Interventions and Supports (PBIS) system. Participants were four middle school teachers of students in general education classrooms. The primary dependent variables …


Effects Of Multi-Day Music Enrichment On Salivary Cortisol And Cage Behavior In Shelter Dogs, Stacy D. Engerbretson Jun 2018

Effects Of Multi-Day Music Enrichment On Salivary Cortisol And Cage Behavior In Shelter Dogs, Stacy D. Engerbretson

Dissertations

Rehoming shelters provide their animals with environmental enrichment with the expectation that modifying the physical space will improve kennel-related stress and subsequently abate undesirable behaviors. Although enrichment has shown moderate success at improving in-kennel behavior, increased use of physiological measurements of stress, such as cortisol, has garnered doubt as to which canine behaviors are truly elicited by a biological state of distress. Consequently, it is unknown if past examples of successful kennel enrichment decreased biological stress in addition to affecting behavior. This study explored music’s effect on salivary cortisol and music’s potential as a long-term, kennel enrichment strategy. Shelter dogs …


Behavioral Contrast Using A Simulated Organizational Task, Brandon M. Ring Jun 2018

Behavioral Contrast Using A Simulated Organizational Task, Brandon M. Ring

Dissertations

The purpose of the present study was to bridge a gap between Organizational Behavior Management (OBM) and the Experimental Analysis of Behavior (EAB). Although OBM’s historical and scientific roots are nested within EAB, OBM research does not always strictly follow or adhere to basic research definitions or procedures. That is, terms that have specific operational definitions in EAB and Applied Behavior Analysis are sometimes used incorrectly in OBM research. Similarly, these terms are often associated with specific experimental procedures in basic literature, yet OBM research procedures may not follow the strict procedural guidelines. The purpose of the present study was …


Mixing Matching And Sabermetrics: Combining Advanced Analytics And The Generalized Matching Law In Nfl Football Play-Calling, Jacob Bradley Apr 2018

Mixing Matching And Sabermetrics: Combining Advanced Analytics And The Generalized Matching Law In Nfl Football Play-Calling, Jacob Bradley

Dissertations

The fields of advanced analytics in sports and quantitative analysis of behavior as it applies to sports have developed independently over the last several decades. Both fields share the common goal of using a quantitative approach to describe and predict behavior within sports beyond the common traditional verbal accounts. To date, the two fields have not directly intersected. The current study provides an overview of advanced analytics and quantitative analysis of behavior in sports, demonstrates how the two fields can be combined to better account for the behavioral processes involved in decision-making in sports, and identifies several possible ways the …


Evaluating The Effects Of A Self-Management Program With A Peer-Mediated Praise Procedure, Sean P. Field Jun 2017

Evaluating The Effects Of A Self-Management Program With A Peer-Mediated Praise Procedure, Sean P. Field

Dissertations

Research has shown self-management to be a powerful tool that can assist students in establishing and maintaining a range of targeted behaviors including increasing academic performance, increasing independence, and the reduction of problem behavior. However, researchers continue to seek means to implement self-management programs that further increase independence for the student as well as promote greater generalization of established skills. One potential means of achieving this is through the use of peers, as they may allow for greater access to reinforcement. Additionally, the use of peers allows for the reduction or removal of additional demands on teachers and classroom staff. …


Discriminative Stimulus Effects Of 3,4-Methylenedioxypyrovalerone And 4-Methylmethcathinone, Michael D. Berquist Aug 2016

Discriminative Stimulus Effects Of 3,4-Methylenedioxypyrovalerone And 4-Methylmethcathinone, Michael D. Berquist

Dissertations

Recent escalation in the popularity of recreational synthetic cathinone (“bath salts”) use has prompted numerous scientific investigations of the neurochemical and behavioral effects of 3,4-methylenedioxypyrovalerone (MDPV) and 4-methylmethcathinone (4-MMC), two of the more common chemical constituents of these illicit “bath salts”. Previous neurochemical and electrophysiological studies have revealed that MDPV functions as a blocker, and 4-MMC as a substrate, at monoamine transporters, and both produce transient increases in extracellular monoamines. In addition, previous research has demonstrated that MDPV and 4-MMC support self-administration in nonhuman experimental subjects, and their rewarding effects are observed when paired with contextual cues in nonhuman models …


Increasing Vocal Behavior And Establishing Echoic Stimulus Control In Children With Autism, Joseph Shane Apr 2016

Increasing Vocal Behavior And Establishing Echoic Stimulus Control In Children With Autism, Joseph Shane

Dissertations

Many children with autism fail to demonstrate vocal-verbal behavior, including echoic behavior, as early as their typically developing peers. Some also make very limited vocal sounds in general, remaining mostly mute aside from crying or engaging in stereotypy. Echoic behavior involves auditory discrimination and matching, and functions as a beneficial, if not necessary, prerequisite for many other vocal-verbal skills. The purpose of this study was to develop and implement an echoic training procedure for primarily non-vocal children who did not demonstrate auditory discrimination in baseline. The intervention consisted initially of sessions in which any vocal sounds were reinforced. Then differential …


Session-By-Session Feedback From Psychotherapy Outcome Assessment: An Analysis Of Treatment Utility, Lynn Hallberg Hall Apr 2016

Session-By-Session Feedback From Psychotherapy Outcome Assessment: An Analysis Of Treatment Utility, Lynn Hallberg Hall

Dissertations

This study sought to examine the effect of providing outcome assessment data to therapists treating a sample of community adults seeking mental health services at two university training clinics. The participants (N = 41) were predominantly unmarried, Caucasian females, 19 to 39 years old, with a wide range of psychological problems. The therapists were trainees from master’s and doctoral programs in counseling and clinical psychology participating in their first clinical practicums. The Outcome Questionnaire 45-2 (OQ), an instrument designed for frequent measurement of client symptom, interpersonal, and social-role distress, served as the dependent measure. The OQ was designed to show …


Behavior Analysis Program To Improve Habits Of Physical Activity, Eating, And Sleeping, Ivan Noe Martinez Salazar Aug 2015

Behavior Analysis Program To Improve Habits Of Physical Activity, Eating, And Sleeping, Ivan Noe Martinez Salazar

Dissertations

An Internet-based five-week duration program to improve “health habits” using behavior analysis principles and eHealth technology was developed and evaluated. The “health habits” include recurring behaviors that impact health status such as eating, sleeping, and physical activity.

Ten adult participants were recruited online from Mexico. A multiple baseline design was used and participants were randomly assigned into two different groups (i.e., ABBAA and AABBA groups). Participants received online training using videos describing the characteristics of the program and its components. Each participant recorded selected health behaviors using a Microsoft Excel® tool designed specifically for this program’s goal achievements. Participants reported …


An Examination Of Several Variables Influencing The Efficacy Of The Gateway In Street Sign Configuration On Motorist Yielding Behavior, Miles Bennett Aug 2015

An Examination Of Several Variables Influencing The Efficacy Of The Gateway In Street Sign Configuration On Motorist Yielding Behavior, Miles Bennett

Dissertations

This study contains five different experiments that examine the effects of several variables influencing the effectiveness of the In-Street sign and various In-Street sign configurations. Experiment 1 and 2 compared the effects of the Gateway configuration using R1-6 signs to blank fluorescent yellow-green signs arranged in the Gateway configuration on motorist yielding to pedestrians in crosswalks. The results showed that the blank signs produced an increase in yielding from 7% to 33%, while the addition of the message and symbols to the sign increased yielding to 78%. Experiment 1, 2, and 4 examined the effects of different configurations of the …


An Attempt To Establish Approval As A Learned Reinforcer, Kelly T. Kohler Dec 2014

An Attempt To Establish Approval As A Learned Reinforcer, Kelly T. Kohler

Dissertations

Approval does not function as a powerful reinforcer for many children with autism, making it difficult to reinforce appropriate behavior in a functional and consistent manner. The current study first assessed the effects of establishing approval (“Nice,” accompanied by a smile and nod) and nonsense words as discriminative stimuli, with the intent that they might also become learned reinforcers. We conducted several experiments to assess the effectiveness of approval as a reinforcer, including tests on learning new responses (receptive, expressive, freeoperant, and simple simultaneous discriminations) and tests on the performance of previously mastered responses (receptive and expressive responses). Despite the …


The Use Of Response Interruption Redirection, Timeout, And Differential Reinforoement To Decrease Stereotypy, Jessica Korneder Dec 2014

The Use Of Response Interruption Redirection, Timeout, And Differential Reinforoement To Decrease Stereotypy, Jessica Korneder

Dissertations

Behaviors such as toe walking, hand flapping, nonfunctional vocalizations, and rocking are all examples of stereotypy. Stereotypy can occur at high rates in children with and without developmental delays (Smith & Van Houten, 1996). These behaviors can interfere with the acquisition of new skills (e.g., Dunlap, Dyer, & Koegel, 1983; Morrison & Rosales-Ruiz, 1997) and social interactions (Jones, Wint, & Ellis, 1990). The purpose of this study was to assess the effectiveness of response interruption and redirection (RIRD), time-out, and differential reinforcement of other behavior (DRO) in reducing vocal and motor stereotypy with children who engage in automatically reinforced high-rates …


The Neurobehavioral Consequences Of Gestational And Chronic Atrazine Exposure In Male And Female Sprague Dawley Rats, Jennifer L. Walters Dec 2014

The Neurobehavioral Consequences Of Gestational And Chronic Atrazine Exposure In Male And Female Sprague Dawley Rats, Jennifer L. Walters

Dissertations

The adverse health risks of exposure to the herbicide, atrazine, in humans are not fully understood. Although numerous studies have demonstrated atrazine to be an endocrine disrupter, the neurobehavioral consequences of atrazine exposure have not been thoroughly examined. The aim of this study was to investigate the effects of environmentally-relevant levels

of gestational followed by continued chronic atrazine exposure on motor function, learning and memory, anxiety, and striatal dopamine content in rodents. Pregnant Sprague Dawley rats were treated by gavage with 100 µg/kg atrazine (ATZ low), 10 me/kg atrazine (ATZ high), or vehicle on

gestational day l through postnatal day …


Influences Of Tnt-Food Pairings On The Performance Of Mine Detection Rats In Early Training Stages, Timothy L. Edwards Dec 2013

Influences Of Tnt-Food Pairings On The Performance Of Mine Detection Rats In Early Training Stages, Timothy L. Edwards

Dissertations

Anti-Persoonsmijnen Ontmijnende Product Ontwikkeling (APOPO), a Belgian nongovernmental organization headquartered in Tanzania, trains giant African pouched rats (Cricetomys gambianus) to detect land mines and deploys the rats for operational use in countries afflicted with mines and explosive remnants of war. In the present study an evaluation of the influence of ongoing scent-food pairings on the performance of the rats in early mine detection training was conducted. Twenty young rats in APOPO’s mine detection rat program were divided into two groups and exposed to five daily stimulus-food pairing sessions each week. For the experimental group the stimulus was the …


Slope Of Change Through D-Cycloserine Facilitation Of Exposure Therapy In A Social Anxiety Population, Christina M. Sheerin Nov 2013

Slope Of Change Through D-Cycloserine Facilitation Of Exposure Therapy In A Social Anxiety Population, Christina M. Sheerin

Dissertations

The present study sought to add to a growing base of research investigating approaches that facilitate the therapeutic effects of exposure-based therapy for social anxiety disorders. In particular, the approach involves the use of medication adjuvants that work in conjunction with therapeutic learning. This work translates findings from preclinical work to further our understanding of the neurobiological mechanisms that impact extinction learning. Among others, a promising method has been found with the use of D-cycloserine (DCS), a partial NMDA receptor agonist. Evidence of its positive impact in preclinical work has led to its application to clinical populations who suffer from …


Sharing: Social Behavior In Situations Of Risk, Stephanie Theresia Stilling Aug 2013

Sharing: Social Behavior In Situations Of Risk, Stephanie Theresia Stilling

Dissertations

The present study will experimentally investigate human cooperation (sharing) in a laboratory foraging task that simulates environmental variability and resource scarcity (shortfall risk). Specifically, it investigates whether a risk-reduction model of sharing developed by evolutionary biologists (derived from a risk-sensitive optimization model known as the energy-budget rule) could predict human cooperative behavior. Participants respond to earn points exchangeable for money when point gains were unpredictable. Failures to acquire sufficient points result in a loss of accumulated earnings (a shortfall). Participants are given the choice between working alone or working with others. The difficulty of meeting the earnings requirement is manipulated …


Assessing The Generality Of A Bout Analysis In The Description Of Operant Behavior, J. Adam Bennett Aug 2013

Assessing The Generality Of A Bout Analysis In The Description Of Operant Behavior, J. Adam Bennett

Dissertations

Operant psychologists typically use response rate as a primary measure of behavior. Although response rate has proven a useful dependent measure resulting in the identification of many important behavioral regularities, many researchers have argued that the measure has significant limitations. Primarily, response rate treats all responses in the measured response class as functionally equivalent and distributed uniformly across time. This conceptualization of behavior is useful as long as all responses are affected similarly by different experimental manipulations. Research has shown, however, that certain manipulations differentially affect responses with relatively short or long interresponse times. This has led to a new …


Motivating Operations In Drug-Discrimination, Amin Duff Lotfizadeh Jun 2013

Motivating Operations In Drug-Discrimination, Amin Duff Lotfizadeh

Dissertations

Motivating operations (MO) play an important role in learning and performance. According to the behavior analytic conceptualization, MOs alter the probability of responses that lead to relevant reinforcers and alter the reinforcing “value” of those reinforcers (e.g., Michael, 1982, 1993). Recent research suggests that one way in which MOs influence stimulus control is by influencing the control of behavior by discriminative stimuli. Interestingly, in studies with nonhumans, such an effect is commonly observed when lights and tones are used as discriminative stimuli, but not when drugs are used. Procedural differences across studies involving the species studied, the measurement system used …


Dosed Versus Prolonged Exposures: A Direct Comparison Of One-Session Treatments For Animal Phobias, Richard William Seim Jan 2011

Dosed Versus Prolonged Exposures: A Direct Comparison Of One-Session Treatments For Animal Phobias, Richard William Seim

Dissertations

It is widely accepted that for exposure-based therapies to be effective feareliciting stimuli must be presented continuously until there is a marked decrease in the client's anxiety (e.g., Eysenck, 1979; Foa & Kozak, 1986). However, an emerging body of research (cf. Seim, Waller, & Spates, 2010) suggests that a massed series of very brief exposures (< 150 sec) may be effective in the extinction of fear responses. The present study was designed to compare the efficacy and acceptability of two one-session treatments for animal phobias: one that utilized continuous, uninterrupted periods of exposure to a feared animal (Prolonged Exposures) and the other that utilized a massed series of brief (5-120 sec) exposure trials (Dosed Exposures). 24 adults (7 males, 17 females) between the ages of 18 and 57 years (M = 23.6) participated in this study. Each individual met DSM-IV criteria for a diagnosis of snake phobia or spider phobia. Participants were randomly assigned to one of two the two interventions. Both treatments required participants to gradually enter a room, approach, and eventually hold a live ball python or tarantula. Results from mixed model (between x within subjects) analyses of variance showed that the Dosed Exposure treatment performed equally well to Prolonged Exposures at decreasing behavioral avoidance, feelings of anxiety, perceptions of threat, and phobiaspecific cognitions from pre-treatment to post-treatment, and these gains were maintained at one-week follow-up. Although participants receiving Prolonged Exposures reported lower ratings of within-session anxiety, participants in the Dosed Exposure group had lower rates of treatment dropout, better compliance with procedures, and fewer safety-seeking behaviors during the treatment. These findings suggest that, contrary to popular belief, brief exposure trials can be effective in the extinction of phobic responses under certain conditions.


Assessing The Effects Of A Rectangular Rapid-Flashing Beacon On Vehicle Speeds Along A Four-Lane Divided Highway, Michelle Van Wagner Jan 2011

Assessing The Effects Of A Rectangular Rapid-Flashing Beacon On Vehicle Speeds Along A Four-Lane Divided Highway, Michelle Van Wagner

Dissertations

In 2008, nearly 31% of vehicle fatalities were related to failure to adhere to safe vehicle speeds (National Highway Traffic Safety Administration (NHTSA), 2009). Two studies were conducted to evaluate the effects of a Rectangular Rapid-Flashing Beacon (RRFB) triggered by excessive speed on vehicle speed using a combined alternating treatments and reversal design. Experiment 1 assessed the RRFB's impact on speeds as compared to baseline conditions only. Experiment 2 compared the RRFB to two standard beacon configurations. Both experiments were conducted at the same site during approximately the same time period and both employed the same data collection methodology. The …


Testing The Effectiveness Of An Interactive Multimedia System To Train Clinicians In Behavioral Activation, Suzanne E. Decker Jan 2011

Testing The Effectiveness Of An Interactive Multimedia System To Train Clinicians In Behavioral Activation, Suzanne E. Decker

Dissertations

Although many treatments for mental health disorders have been found to be effective in research, community clinicians may not receive training in such empirically supported treatments, and therefore, individuals suffering from disorders may not have access to empirically supported treatment in the community. This study examined the use of an interactive multi-media computerized therapy program, Building a Meaningful Life through Behavioral Activation, as a training tool for mental health clinicians (N=21) using a pre-post study design. Participating clinicians were invited to complete this computer program over the course of several weeks, and to complete knowledge quizzes and written responses …


The Effects Of Yellow Rectangular Rapid-Flashing Beacons (Rrfbs) Onmotorists' Yielding, Exit Lane Encroachment And Conflicts At Fire Station Exits, Erick K. Marmolejo Jan 2011

The Effects Of Yellow Rectangular Rapid-Flashing Beacons (Rrfbs) Onmotorists' Yielding, Exit Lane Encroachment And Conflicts At Fire Station Exits, Erick K. Marmolejo

Dissertations

The purpose of the current study was to explore the extent to which yellow rectangular rapid-flashing beacons (RRFBs) affected motorists' yielding, exit-lane encroachment and conflicts at fire station exits. This study explored the use of RRFBs attached to sign prompts that alerted motorists to the presence of exiting emergency vehicles. These signs were activated only during an exit event. It was hypothesized that motorists would increase their frequency of safe and legal yielding in the presence of the RRFB intervention when compared to the absence of contextually activated RRFB units. This study was conducted in a midwestern town in front …


Effects Of Yellow Rectangular Rapid-Flashing Beacons And Novel Lane Markings On Motorists’ Yielding, Speed, And Headway At Multilane Uncontrolled Crosswalks, Jimmy Wayne Shurbutt Dec 2010

Effects Of Yellow Rectangular Rapid-Flashing Beacons And Novel Lane Markings On Motorists’ Yielding, Speed, And Headway At Multilane Uncontrolled Crosswalks, Jimmy Wayne Shurbutt

Dissertations

Several methods have been examined to increase motorists’ yielding to pedestrians and the distance at which they yield on multilane crosswalks at uncontrolled locations with relatively high average daily traffic (ADT). A series of 5 experiments were conducted to evaluate the efficacy of rectangular rapid-flashing beacons (RRFBs) as effective pedestrian crossing aides. The first experiment found that the RRFBs produced a significant increase in yielding behavior at all 26 sites located in 3 cities in the United States. Data collected over a 2-year follow-up period at 22 of these sites plus 14-month follow-up at an additional 4 sites documented the …


Neurochemical Effects Of Amyloid-Beta Oligomers In Rats, John J. Panos Dec 2010

Neurochemical Effects Of Amyloid-Beta Oligomers In Rats, John J. Panos

Dissertations

Alzheimer’s disease is a progressive neurodegenerative disease characterized by memory loss and cognitive decline. Although the symptomology of Alzheimer’s disease is well defined, its precise etiology remains elusive. Animal models are invaluable for understanding the pathogenesis of this devastating disease. Knowledge of the neurochemical actions of amyloid-β oligomers in specific brain structures is essential for validating animal models of Alzheimer’s disease and for determining the most appropriate behavioral assays of memory. The specific aim of this project was to investigate the neurochemical effects of direct intracerebral infusion of amyloid-β oligomers in the rat. Experiment 1 investigated direct infusions of synthetic …


Testing The Efficacy Of A Computerized Behavioral Activation Treatment Of Depressive Disorders, Alyssa H. Kalata Aug 2010

Testing The Efficacy Of A Computerized Behavioral Activation Treatment Of Depressive Disorders, Alyssa H. Kalata

Dissertations

The present study sought to examine the feasibility and preliminary efficacy of a computerized behavioral activation treatment for depressive disorders (IMMBA), while also investigating potential mechanisms of action involved in the treatment of depression through the use of behavioral activation. Nine adults who met criteria for either Major Depressive Disorder or Dysthymic Disorder were recruited from Kalamazoo, Portage, and surrounding areas in Southwestern Michigan. All participants received ten sessions of IMM-BA treatment. Symptoms of depression and related information were assessed at pretreatment and one-week, onemonth, three-month, and six-month follow-up through the use of the Beck Depression Inventory - II (BDI-II), …