Understanding Interpersonal Therapy (IPT)

Interpersonal Therapy (IPT) is a dynamic and structured form of psychotherapy that primarily focuses on individuals’ relationships and social interactions. Unlike many other therapeutic approaches that delve into the depths of a person’s past, IPT zeros in on the present, specifically on how current relationships and social roles contribute to an individual’s psychological well-being. The interpersonal therapeutic focus is different than the broader aim of social psychology that examines larger social environments.

Myrna M. Weissman, Ph.D., and John C. Markowitz, M.D., explain:

“The interpersonal approach is most concerned with the individual’s closest relationships, most notably family relationships-both in the family of origin and in the family of procreation; love relationships, both heterosexual and homosexual; friendship patterns, particularly in adolescence and young adulthood; work relations, and neighborhood or community relationships” (Weissman & Markowitz, 1998, p. 47).

Originating in the 1970s, IPT has grown to become a well-regarded therapy, especially in treating mood disorders such as depression and anxiety. the theory posits that interpersonal issues such as conflicts, role transitions, grief, and social isolation can trigger or exacerbate psychological problems. By addressing these issues directly, IPT aims to improve the individual’s interpersonal functioning.

Weissman and Markowitz describe that IPT emphasizes the link between the emergence of depressive symptoms and existing interpersonal issues, making it a practical approach to treatment. This therapy prioritizes current relationships over past ones, concentrating on the patient’s immediate social environment. The therapist’s role in IPT is to address the development of symptoms and social dysfunction related to depression rather than focusing on long-standing personality traits (Weissman & Markowitz, 1998, p. 48).

Social Support’s Role in Wellness

The role of social support in wellness and healing is well documented. Daniel Siegel, a clinical professor of psychiatry at the UCLA School of Medicine, wrote:

“In our day to-day lives, the degree of social support we feel helps modulate our stress response. Holding the hand or seeing a photo of someone you love and trust can actually decrease your brain’s anticipatory anxiety, as well as its neural response to a painful shock” (Siegel, 2020).

Gabor Maté, MD. wrote that research revealed a “significant interaction between highly threatening life stressors and social support.” Women experiencing “a stressor objectively rated as highly threatening and who were without intimate emotional social support had a ninefold increase in risk of developing breast carcinoma” (Maté, 2008). Randolph Nesse, renowned for his pioneering role in founding the field of evolutionary medicine and evolutionary psychiatry, reports that the strongest factor contributing to Post-Traumatic Stress Disorder after a traumatizing event is a “lack of social support” (Nesse, 2019).

In addition, attachment theory also provides a large body of empirical evidence supporting the role of strong relationship bonds in healthy functioning.

With interpersonal relationships that are tightly intertwined with physical and psychological wellness, it is only common sense that a treatment that targets interpersonal problems would also treat psychological ailments.

History and Development of IPT

Interpersonal therapy is a therapeutic method that originates from the interpersonal perspective. The movement initially evolved from the work of Harry Stack Sullivan’s interpersonal theory. Sullivan saw development as a social process in which the human being “is constantly being transformed—is (brought) step by step, from very, very early in life, through the influence of other people. . .for . . . living . . . in some sort of social organization” (Sullivan, 1953). Sullivan and his associates developed “a comprehensive and consistent theory of the connections between psychiatric disorders and interpersonal relations for the developing child in the family and for the adult in the multiple transactions of life” (Klerman, 1984, p. 46).

The theory also embraced some of the theories of the neo-Freudians, Frieda Fromm-Reichmann, Erich Fromm, and Karen Horney (Klerman, 1984).

IPT was developed in the late 1960s and early 1970s by Gerald L. Klerman, Myrna M. Weissman, and their colleagues. This therapeutic approach emerged from clinical research studies on depression, reflecting a need for a treatment that was both effective and could be clearly delineated for research purposes (Weissman & Markowitz, 1998). The creators aimed to bridge the gap between psychodynamic and cognitive-behavioral therapies, taking elements from both to form a cohesive and pragmatic approach.

Phases of IPT

The IPT process can be divided into three distinct phases, each with specific goals and tasks.

Initial Phase

The initial phase consists of assessment and diagnosis, where the therapist collaborates with the client to pinpoint the key interpersonal challenges causing their distress. This phase generally spans one to three sessions. According to Gerald Klerman, a thorough evaluation goes beyond just reviewing symptoms and previous hospitalizations or treatments; it is essential to also consider both past and present interpersonal relationships of the patient (Klerman, 1984).

Weissman and Markowitz elaborate on this history by explaining that the psychiatric history incorporates an “interpersonal inventory,” which involves examining the patient’s current social functioning, intimate relationships, their patterns, and mutual expectations. They highlight how changes in relationships close to the onset of symptoms—such as losing a loved one, children moving out, escalating marital conflicts, or feeling isolated from a confidant—are clarified. This examination creates a framework for understanding the social and interpersonal backdrop related to the emergence of depressive symptoms and helps determine the focus of treatment (Weissman & Markowitz, 1998).

Diagnosis and Education

After the assessment and diagnosis, the therapist educates the patient about depression “explicitly discussing the diagnosis, including the constellation of symptoms that define major depression, and what the patient might expect from treatment.” The therapist next links the depressive syndrome to the patient’s interpersonal situation in a formulation to an interpersonal problem areas.

• Grief
• Role disputes and transition
• interpersonal deficits (Weissman & Markowitz, 1998).

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Weissman, Markowitz, and Klerman explain that there is “evidence to support each of the three key interpersonal problem areas: that people become depressed in the contexts of complicated bereavement, marital disputes, and the life changes encompassed by interpersonal role transitions, particularly in the absence of social supports. Social supports—having intimate relationships, or even having a confidant to talk to—protect against depression” (Weissman et al., 2000).

Once a diagnosis is made and the associated interpersonal situation linked to the symptoms, the therapy is ready to begin phase two of treatment.

Middle Phase

During the middle phase, the therapist and client work on addressing the identified interpersonal issues.

Grief

For grief, defined as complicated bereavement following the death of a loved one, the therapist facilitates the catharsis of mourning and gradually helps the patient to find new activities and relationships to compensate for the loss.

Laura H. Mufson and her colleagues explain that grief itself is not considered a problem unless “it is prolonged or becomes abnormal.” In normal bereavement, a person may experience “sadness, changes in appetite and/or sleep, and difficulties in day-to-day functioning.” These symptoms typically resolve themselves “without treatment in 2 to 4 months” (Mufson et al., 1993).

When grief does not resolve, then the therapist may help the client work through the stages of grief. Some techniques that a therapist may focus on is:

• Open communication
• Developing Other Supportive Relationships
• Reintegration into Social Environments (Mufson et al., 2004).

ee Kubler-Ross Model of Grief for more on this topic

Role Disputes and Transactions

See Role Theory for more on the topic of roles

Interpersonal Deficits

Interpersonal deficits, which represent the fourth problem area in IPT, indicate that the patient has insufficient social skills and struggles to initiate or maintain relationships. Klerman notes that these deficits often result in social isolation, which can be a significant source of emotional distress. He states that the primary aim of treating interpersonal deficits is to alleviate this social isolation. Since there are currently no meaningful connections, treatment focuses on past relationships, the client-therapist relationship, and starting to build new connections. Klerman also points out that addressing interpersonal deficits through brief treatment can be particularly challenging; therefore, goal setting should primarily focus on initiating work on these issues rather than achieving complete resolution (Klerman, 1984, p. 147).

Treatment may involve:

• Developing new communication skills
• Practicing social skills
• Understanding social norms

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The therapist provides practical strategies and interventions to help the client make meaningful changes in their relationships.

Termination Phase

The termination phase focuses on consolidating gains and preparing for the end of therapy. “IPT is explicitly defined as time-limited, not open-ended, treatment. Frequency and duration are defined at the outset in a contract the therapist makes with the patient” (Weissman et al., 2000). The therapist and client review progress, discuss strategies for maintaining improvements, and address any remaining concerns. This phase helps to ensure that the client is equipped with the skills and confidence to continue their growth independently.

Weissman and her colleagues wrote that when there are at least three or four sessions to go, “the therapist should raise the topic of the end of treatment and elicit reactions to it if the patient has not already volunteered such information” (Weissman et al., 2000). The goal is to prepare the client to manage interpersonal relationships on their own in a manner that is conducive to their mental health. If they can develop these fundamental skills, not only will they have less emotional disruptions, but the strengthening relationship will also provide their own therapy to life’s disappointments.

The therapist should not take the place of healthy relationships.

During the termination phase the therapist and client identify early signs of relapse and prepare an action plan to employ when these signs appear (Sloan et al., 2009).

Key Principles of IPT

IPT is structured around several core principles that guide the therapeutic process:

• Focus on Interpersonal Relationships: Therapy sessions often center around understanding and improving the quality of these relationships, identifying patterns that may be contributing to distress, and developing healthier ways of interacting.
• Time-Limited and Structured: IPT is typically a time-limited therapy, usually consisting of 12-16 weekly sessions. This structure provides a clear framework for both the therapist and the client, helping to maintain focus and momentum throughout the therapeutic process.
• Present-Focused: While past experiences are not ignored, IPT emphasizes the here and now. It seeks to understand how current interpersonal dynamics are affecting the individual’s mental health and how to make immediate changes to improve their situation.
• Collaborative Approach: IPT is a collaborative effort between the therapist and the client. The therapist takes on an active role, providing guidance, feedback, and support, while the client is encouraged to take an active role in identifying problems and implementing solutions.

Applications of IPT

IPT has been extensively researched and proven effective in treating a variety of psychological conditions. Numerous studies have demonstrated the effectiveness of IPT. Research has shown that IPT can lead to significant improvements in symptoms, interpersonal functioning, and overall quality of life. It has been found to be particularly effective in treating major depressive disorder, with benefits comparable to those of medication and other psychotherapies. Its applications extend beyond depression to include:

Anxiety Disorders

IPT has shown promise in treating anxiety disorders by addressing the interpersonal factors that may contribute to anxiety, such as social isolation, relationship conflicts, and communication difficulties (Stuart et al., 2024; Adiguzel & Okanli, 2024).

See Anxiety Disorders for more on this topic

Eating Disorders

IPT has been adapted for use with individuals struggling with eating disorders, helping them to explore the interpersonal triggers and maintaining factors of their disordered eating behaviors (Murphy et al., 2012).

Bipolar Disorder

For individuals with bipolar disorder, IPT can be used as an adjunctive treatment, focusing on improving interpersonal functioning and managing the social aspects of living with the condition (Stuart et al., 2024).

See Bipolar Disorders for more on this topic

Post-Traumatic Stress Disorder (PTSD)

IPT can be beneficial for individuals with PTSD by addressing the interpersonal impact of trauma, including difficulties in trust, communication, and intimacy (Stuart et al., 2024).

See Post-Traumatic Stress Disorder for more on this topic

Associated Concepts

• Convoy Theory: This theory explores the impact of a network of close and more distant relationships that form a “convoy” of social support. This network includes family members, friends, colleagues, and other acquaintances who provide varying levels of support, guidance, and companionship.
• Maslow’s Hierarchy of Needs: In this theory, social belonging is one of the five human needs. After our environment meets our physiological and safety needs, individuals seek to fulfill their social needs of belonging and love.
• Interpersonal Communication Theories: A basic element of close relationships is the quality of interpersonal communication. Several theories in social psychology examine elements of healthy communication.
• Social Support Theory: This concept involves the perception and actuality that one is cared for, has assistance available from other people, and that one is part of a supportive social network.
• Social Exchange Theory: This theory is a social psychological and sociological perspective that explains social change and stability as a process of negotiated exchanges between parties. According to this theory, individuals evaluate their relationships and interactions based on the perceived rewards and costs involved.
• Belongingness: This refers to the human emotional need to be an accepted member of a group. This involves feeling valued, included, and connected to others.
• Interpersonal Theory: This theory focuses on the interactions, relationships, and communication between individuals. It explores how people’s behaviors, thoughts, and emotions are influenced by their interactions with others, as well as how these interactions shape their self-concept and identity.

A Few Words by Psychology Fanatic

In conclusion, Interpersonal Therapy (IPT) stands out as a transformative approach to psychotherapy that not only addresses the complexities of interpersonal relationships but also emphasizes their critical impact on mental health. By focusing on current social dynamics rather than delving deeply into past traumas, IPT empowers individuals to navigate their emotional struggles through enhanced communication and relationship-building strategies. This structured yet flexible therapy provides a roadmap for clients seeking to understand and improve their interactions with others, ultimately fostering healthier connections that contribute positively to overall well-being.

As we reflect on the significance of social support in our lives, it becomes clear that IPT serves as an essential tool for those grappling with various psychological challenges. The ongoing research validating its effectiveness reaffirms its role as a dynamic therapeutic option suitable for addressing mood disorders like depression and anxiety, as well as other conditions such as PTSD and eating disorders. By bridging the gap between individual experiences and relational contexts, IPT not only aids in alleviating symptoms but also cultivates resilience through meaningful connections—reinforcing the idea that at the heart of healing lies our ability to relate to one another effectively.

Last Update: October 1, 2025