Business Details
Expert Psychotherapy and Research Consultation Services in Cedarhurst, NY
I am a New York State Licensed Psychologist with over a decade of experience in individual therapy, psychological testing, and research consultation. My practice focuses on creating a supportive environment tailored to each client's unique needs, addressing concerns such as depression, anxiety, relationship difficulties, and substance use. I integrate evidence-based approaches like cognitive, behavioral, and psychodynamic therapies to foster personal growth and effective coping strategies. As a Full Professor at Long Island University-Post, I combine clinical expertise with academic rigor, mentoring doctoral students and contributing to peer-reviewed research.My statistical and research methods consulting services support professionals in data analysis, study design, and academic writing. With a career spanning private practice in Washington, DC, and academic roles, I bring a wealth of experience to both clinical and scholarly endeavors. My practice offers flexible scheduling, including Sunday appointments, and prioritizes confidentiality through secure communication channels.
Services
Individual Psychotherapy
Psychological Testing
Depression Treatment
Anxiety Counseling
ADHD Assessment
Research Consultation
Statistical Analysis
Writing Services
Integrative Therapy
Cognitive Therapy
Highlights and features
- We offer evidence-based therapies tailored to individual needs.
- Our practice combines clinical practice with academic research expertise.
- We provide specialized psychological testing for learning and behavioral disorders.
- Our team includes a published researcher with 11 years of scholarly experience.
- We offer flexible Sunday appointment availability.
Associations and certifications
- American Psychological Association (APA)
Services
Individual Psychotherapy
Personalized therapy for teenagers and adults addressing depression, anxiety, relationship issues, and substance use. Uses integrative, psychodynamic, and cognitive-behavioral approaches to foster self-understanding and behavioral change. Focuses on creating individualized treatment plans aligned with client values.
Psychological Testing
Comprehensive evaluations for learning disorders, ADHD, and emotional concerns. Includes diagnostic clarification and personality assessments. Provides actionable insights for treatment planning and academic or workplace accommodations.
Research Consultation
Expert guidance on research methodology, statistical analysis, and academic writing. Supports researchers in selecting appropriate methods, analyzing data with SPSS/R, and preparing manuscripts for publication.
Statistical Analysis
Statistical support for researchers including database setup, analysis execution, and interpretation of results. Specializes in SPSS, R, and meta-analysis software for quantitative research projects.
Writing Services
Editing and consultation for theses, dissertations, and academic manuscripts. Draws on editorial experience as a journal Consulting Editor and dissertation committee member to improve clarity and publication readiness.
People
Marc J. Diener, Ph.D.
Licensed Psychologist & Professor
Licensed psychologist with 11 years of research experience and a Full Professor at Long Island University-Post. Specializes in psychotherapy, psychological testing, and statistical consultation. Published 10 peer-reviewed articles and 6 book chapters.
Questions
What types of therapy do you offer?
I provide integrative, psychodynamic, cognitive, and behavioral therapies tailored to individual needs for depression, anxiety, relationship issues, and substance use.
Do you offer psychological testing for adults?
Yes, I conduct psychological testing for all ages, including assessments for learning disorders, ADHD, and personality evaluations.
What research consultation services are available?
I assist with study design, statistical analysis (SPSS/R), manuscript editing, and grant proposal development for academic and clinical researchers.
Are weekend appointments available?
Yes, I offer Sunday appointments to accommodate clients' schedules.
How do you ensure confidentiality?
All communications use encrypted, secure platforms. Office policies comply with New York State psychological practice regulations for privacy protection.
