Selected Publications

World Psychiatry, February 2018
Hikikomori: experience in Japan and international relevance.
Hikikomori is still a hidden epidemic in many countries and, to grasp its worldwide relevance, diagnostic criteria should be included in ICD-11 and future DSM systems.

Psychiatric Services, October 2017
No-Show Rates When Phone Appointment Reminders Are Not Directly Delivered.
In this continuous quality improvement (CQI) project, we found appointment attendance rates were considerably higher when a phone appointment reminder was live, as compared to voice mail or no answer.

Psychiatric Services, June 2017
Suicide Risk Assessment and Prevention: A Systematic Review Focusing on Veterans
In this review of recently published studies, we found several promising approaches, but no definitive standard for either suicide risk assessment or preventative interventions.

BMC Psychiatry, July 2016
Brief gatekeeper training for suicide prevention in an ethnic minority population: a controlled intervention.
This paper assesses the efficacy of a brief, multi-component gatekeeper intervention in promoting suicide prevention in a high-risk Asian community in the United States.

American Journal of Psychiatry, February 2016
A 39-Year-Old “Adultolescent”: Understanding Social Withdrawal in Japan.
This paper describes a fascinating case of a patient who has been profoundly isolated for his entire adult life and discusses the cultural context to the condition.

General Hospital Psychiatry, March 2016
Social Support and Health Service Use in Depressed Adults: Findings from the National Health and Nutrition Examination Survey.
In this study we found that depressed adults who receive support from loved ones - especially men - rarely use mental health services even though they do often use other health care services.

Journal of American Geriatric Society, October 2015
Does Mode of Contact with Different Types of Social Relationships Predict Depression Among Older Adults?  Evidence from a Nationally Representative Survey.
We provide evidence that regular in-person social contact reduces risk for developing depression, but connecting via the phone or email do not help stave off depression.


Suicide & Life-threatening Behavior, November 2014
Military veterans’ experiences with suicidal ideation: Implications for intervention and prevention.
Our in-depth interviews with veterans from the Iraq & Afghanistan conflicts revealed that military culture, difficult deployment experiences, and challenges adjusting to life after deployment were three common contributors to their experience having thoughts about suicide.

Jrnl Suicide and Life-Threatening Behavior

Psychiatry Research, May 2015
Psychopathology associated with social withdrawal: Idiopathic and comorbid presentations.
In this brief report, we provide some of the first evidence of the existence of a syndrome of social withdrawal not caused by other psychiatric illnesses.

Asia-Pacific Psychiatry, November 2015
Use of a Public Film Event to Promote Understanding and Help-Seeking for Social Withdrawal.
This paper shows how movies can be used to educate and engage the public in mental health issues.

The International Journal of Social Psychiatry, May 2014
Identification of the hikikomori syndrome of social withdrawal: Psychosocial features and treatment preferences in four countries.
This study is the first to document the presence of hikikomori in multiple countries using the same research definition of the condition.

International Journal of Social Psychiatry

The Journal of Family Practice, August 2013
How can we better manage difficult patient encounters?
The practical report reviews the literature on challenging doctor-patient relationships, then gives helpful tips to primary care doctors on better engaging their patients.

The Journal of Family Practice

Journal of Anxiety Disorders, May 2013
The role of social isolation in social anxiety disorder: A systematic review and meta-analysis.
This study provides a comprehensive review of tools to measure social isolation and quantifies its influence on social anxiety.

Journal of Anxiety Disorders

PLoS ONE, April 2013
Social relationships and depression: Ten-year Follow-Up from a Nationally Representative Study.
Our analysis of data from thousands of middle-aged Americans shows that the quality of social relationships affects development of depression more so than the quantity of relationships.


Psychiatric Services, November 2012
The relationship between level of training and accuracy of violence risk assessment.
This study demonstrated that more training and experience for psychiatrists is associated with better ability to predict aggressive behaviors by psychiatric patients.

Psychiatric Services

Academic Medicine, July 2011
The key role of a transition course in preparing medical students for internship.
We provide a template for medical educators on designing a capstone course to help students transition into doctors.

Academic Medicine

The Journal of Nervous & Mental Disease, June 2010
Hikikomori, a Japanese culture-bound syndrome of social withdrawal?: A proposal for DSM-5.
This paper argues that hikikomori is a cultural syndrome and merits further research as a psychiatric condition.

The Journal of Nervous & Mental Disease

International Journal of Social Psychiatry, March 2010
A new form of social withdrawal in Japan: a review of hikikomori.
I provide the first review in the English medical literature of a severe form of social withdrawal called hikikomori.

International Journal of Social Psychiatry

Academic Medicine, April 2009
The development of clinical research training: past history and current trends in the United States.
This article outlines several means of training physicians in the conduct of patient-oriented research.

Academic Medicine

A complete list of publications and other research products is available here > >