Ashley Schnakenberg Martin, PhD
Assistant ProfessorCards
About
Research
Publications
Featured Publications
A Guide for the Implementation of Group-Based Metacognitive Reflection and Insight Therapy (MERITg)
Martin A, Bullock J, Fiszdon J, Stacy M, Martino S, James A, Lysaker P. A Guide for the Implementation of Group-Based Metacognitive Reflection and Insight Therapy (MERITg). Journal Of Contemporary Psychotherapy 2022, 53: 91-98. DOI: 10.1007/s10879-022-09560-9.Peer-Reviewed Original ResearchTranslating an Integrative Metacognitive Model of Psychotherapy for Serious Mental Illness Into a Group Format: A Pilot Investigation on Feasibility
Martin A, Bullock J, Fiszdon J, Stacy M, Martino S, James AV, Wiesepape C, Lysaker PH. Translating an Integrative Metacognitive Model of Psychotherapy for Serious Mental Illness Into a Group Format: A Pilot Investigation on Feasibility. Psychological Services 2024, 21: 130-138. PMID: 36066852, PMCID: PMC10484016, DOI: 10.1037/ser0000706.Peer-Reviewed Original ResearchSerious mental illnessMental illnessOutpatient psychiatric settingsRoutine clinical careGroup-based interventionBody of evidenceClinical carePsychiatric settingsIllnessPilot investigationInsight therapyGroup formatProgram evaluation measuresClinical demandGroup psychotherapyInterventionGroupParticipantsInpatientsPsychotherapyTherapyAuditory feature perception and auditory hallucinatory experiences in schizophrenia spectrum disorder
Schnakenberg Martin AM, Bartolomeo L, Howell J, Hetrick WP, Bolbecker AR, Breier A, Kidd G, O’Donnell B. Auditory feature perception and auditory hallucinatory experiences in schizophrenia spectrum disorder. European Archives Of Psychiatry And Clinical Neuroscience 2017, 268: 653-661. PMID: 28936548, PMCID: PMC7126185, DOI: 10.1007/s00406-017-0839-1.Peer-Reviewed Original ResearchConceptsAuditory verbal hallucinationsSchizophrenia spectrum disordersAuditory perceptionSZ individualsFeature perceptionVerbal hallucinationsSpectrum disorderAuditory featuresImpaired auditory perceptionSchizophrenia Voices QuestionnaireBasic Auditory CapabilitiesTemporal order discriminationAuditory hallucinatory experiencesCognitive processingTone taskOrder discriminationHamilton ProgramHallucinatory experiencesGreater deficitsSZ groupAuditory hallucinationsAuditory capabilitiesPerceptionVoice QuestionnaireIntellectual impairmentDifferential Cognitive Performance in Females and Males with Regular Cannabis Use
Martin A, D’Souza D, Newman SD, Hetrick WP, O’Donnell B. Differential Cognitive Performance in Females and Males with Regular Cannabis Use. Journal Of The International Neuropsychological Society 2021, 27: 570-580. PMID: 34261548, PMCID: PMC8830784, DOI: 10.1017/s1355617721000606.Peer-Reviewed Original ResearchConceptsRegular cannabis useCannabis useCognitive measuresPsychomotor speedBiological sexHopkins Verbal Learning TestDifferential cognitive performanceNon-using peersVerbal Learning TestMeasures of intelligenceWechsler Abbreviated ScaleDigit symbol testGreatest group differencesVerbal learningDigit spanLearning TestCognitive performanceAbbreviated ScaleNeurocognitive deficitsCognitive deficitsSymbol testCannabis exposurePsychomotor performanceGroup differencesCognitionCompared to high and low cannabis use, moderate use is associated with fewer cognitive deficits in psychosis
Martin A, Bonfils KA, Davis BJ, Smith EA, Schuder K, Lysaker PH. Compared to high and low cannabis use, moderate use is associated with fewer cognitive deficits in psychosis. Schizophrenia Research Cognition 2016, 6: 15-21. PMID: 28740820, PMCID: PMC5514308, DOI: 10.1016/j.scog.2016.09.001.Peer-Reviewed Original ResearchLifetime cannabisCannabis useLess impairmentGroup of patientsDose related responsePoor levelCannabis/Assessment of neurocognitionLifetime cannabis usePoor cognitionSevere impairmentCognitive deficitsCognitive functionLower cannabisModerate cannabisCannabisSchizophreniaImpairmentHigher cannabisNeurocognition
2025
Metacognitive and Related Approaches in the Treatment of Schizophrenia-Spectrum Disorders.
Fiszdon J, Schnakenberg Martin A, Kurtz M. Metacognitive and Related Approaches in the Treatment of Schizophrenia-Spectrum Disorders. Annual Review Of Clinical Psychology 2025 PMID: 41238221, DOI: 10.1146/annurev-clinpsy-061724-085601.Peer-Reviewed Original ResearchSchizophrenia spectrum disordersMetacognitive trainingFeatures of schizophrenia spectrum disordersTreatment of schizophrenia spectrum disordersCognitive behavioral therapyPerceptions of selfMetacognitive therapyBelief inflexibilityCognitive remediationSchizophrenia spectrumSense of selfInsight therapyBehavioral therapyEvidence baseUnusual experiencesDisorganized thinkingCognitive dysfunctionMetacognitive componentsAwareness of biasMetacognitive reflectionTreatment targetMetacognitionDisordersSelfTheoretical underpinningsCannabis, Aging and Cognition: An Urgent Need for Research
D’Souza D, Gupta P, Martin A, Stevens M, Pearlson G. Cannabis, Aging and Cognition: An Urgent Need for Research. Cannabis And Cannabinoid Research 2025, 11: 1-4. PMID: 41204734, DOI: 10.1177/25785125251394916.Peer-Reviewed Original ResearchLongitudinal Predictors of Insomnia in a Population‐Based Sample of U.S. Military Veterans
Nichter B, Hill M, Fischer I, Trachik B, Worley C, Martin A, Na P, Pietrzak R. Longitudinal Predictors of Insomnia in a Population‐Based Sample of U.S. Military Veterans. Journal Of Sleep Research 2025, e70224. PMID: 41126653, DOI: 10.1111/jsr.70224.Peer-Reviewed Original ResearchChildhood physical abuseU.S. military veteransPredictors of insomniaIncident insomniaPopulation-based samplePopulation-based studyMilitary veteransLongitudinal predictorsU.S. veteransSample of U.S. military veteransPhysical abuseStudy of U.S. veteransPopulation-based longitudinal dataPopulation-based cohortRisk factorsTargeted prevention strategiesBaseline neuroticismPrevalence of insomniaYounger ageAttention difficultiesAttention problemsTrauma historyInsomnia symptomsInsomniaClinical careIncidence and risk factors for subthreshold insomnia among U.S. military veterans: a population-based, longitudinal study
Nichter B, Hill M, Fischer I, Na P, Schnakenberg Martin A, Worley C, Pietrzak R. Incidence and risk factors for subthreshold insomnia among U.S. military veterans: a population-based, longitudinal study. Sleep Medicine 2025, 132: 106581. PMID: 40403448, DOI: 10.1016/j.sleep.2025.106581.Peer-Reviewed Original ResearchConceptsSubthreshold insomniaRisk factorsHealth-related risk factorsPopulation-based longitudinal dataAt-risk veteransPhysical health outcomesPopulation-based sampleTargeted prevention strategiesU.S. veteran populationKey risk factorsU.S. military veteransDegree of distressHealth outcomesPopulation-basedMultiple predisposingVeteran populationEmployment statusClinical insomniaMilitary veteransPrevention strategiesChronic painVeteransSleep difficultiesAt-riskLongitudinal study
2024
The Importance of Treatment Modality in Veterans with Opioid Use Disorder: Implications for Virtual Care
Meshberg-Cohen S, Schnakenberg Martin A, Wolkowicz N, Gross G, DeViva J. The Importance of Treatment Modality in Veterans with Opioid Use Disorder: Implications for Virtual Care. Community Mental Health Journal 2024, 61: 899-906. PMID: 39704754, DOI: 10.1007/s10597-024-01428-7.Peer-Reviewed Original ResearchAlcohol use disorderPsychiatric emergency roomUse disorderPsychotic disordersOpioid use disorderComorbid alcohol use disorderTreatment engagementPsychiatric comorbiditiesTelehealth transitionAddiction treatmentTreatment utilizationIllness severityTreatment modalitiesDisordersVeteransOpioidVirtual treatmentMOUDAddictionIn-personFrequent in-person visitsEmergency roomTreatment recordsDemographic featuresIllness
Clinical Trials
Current Trials
Acute Effects of THC in Older Adult
IRB ID2000038388RoleSub InvestigatorPrimary Completion Date12/31/2025Recruiting ParticipantsSchizophrenia Spectrum Biomarkers Consortium (SSBC)
IRB ID2000029485RoleSub InvestigatorPrimary Completion Date12/31/2030Recruiting Participants
Academic Achievements & Community Involvement
News & Links
Media
YC-SCAN2 February 2026 Webinar
The February 2026 YC-SCAN2 webinar Driving While Stoned: Why It’s Complicated, featured Godfrey Pearlson, who presented a comprehensive overview of cannabis and driving impairment. His talk examined the pharmacokinetics and pharmacodynamics of THC, its behavioral effects on driving performance, and the broader public health implications of cannabis use behind the wheel. Dr. Pearlson highlighted the unique challenges in detecting cannabis-related impairment compared to alcohol, noting the limitations of current roadside sobriety testing and per se legal standards. Drawing on his research using advanced driving simulators and virtual reality paradigms, he demonstrated that THC can impair critical driving skills in subtle but meaningful ways, with effects that may persist even after blood THC levels decline. The presentation also addressed the complexity of cannabis use patterns, including variability across dosage forms and the absence of a standardized dose equivalent, and emphasized the need for continued research on issues such as edible cannabis and sex-related differences in impairment.
News
- October 07, 2024
Schnakenberg Martin Honored With Psychologists in Public Service Early Career Achievement Award
- October 04, 2024Source: Behavioral Sciences
Group-Based Metacognitive Reflection and Insight Therapy and Its Relationship to Recovery-Oriented Beliefs in Serious Mental Illness
- June 02, 2023Source: Psychopharmacology
Preliminary Study of Interactive Effects of THC and Ethanol on Driving
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