Therapeutic Approach

Interpersonal Therapy

What is Interpersonal Therapy?

Interpersonal Therapy (IPT) is a time-limited talk therapy for depression that focuses on relationships, roles, and loss. The premise is blunt: depression does not only live in your thoughts. It lives in how you are getting along with the people who matter, and in the roles you occupy without a script. IPT is short-term and structured. You pick one or two interpersonal problem areas and stay with them, rather than touring your whole history. It was developed as a focused treatment for depression, and it is also used for grief, conflict, and life change that leaves you without a clear place to stand. The goal is to relate in a way that doesn't keep feeding the mood.

Shift Collab therapists offer IPT online across Canada. You can start with a free Meet & Greet to find the right registered therapist for you.

Interpersonal Therapy is a way of working with the low mood that shows up when a relationship, a role, or a loss has stopped making sense.

This page is informational and is not therapy, a diagnosis, or a substitute for care from a qualified professional. If you are in crisis in Canada, call 9-1-1 or 9-8-8.

What it helps with

IPT is most often used for depression, especially when the low mood is tangled up with something happening between you and other people, a fight that never ends, a role that changed, a death that still organizes the week. Grief is a core focus when mourning has stalled or been crowded out, not because grief is a disorder, but because depression can take up residence inside it. Role transitions, becoming a parent, leaving a job, ending a relationship, moving countries, are another common reason people come, especially when the old identity has gone and the new one does not fit yet. Ongoing disputes with a partner, a family member, or someone at work sit here too, as do stretches of isolation where there is no one close enough to practise with. IPT has also been studied in the perinatal period, when depression arrives during pregnancy or the first year after a birth. It is not designed as a long excavation of childhood for its own sake.

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RESEARCH EVIDENCE

A review of trials found interpersonal therapy eased depression more than no treatment did, and about as well as other talk therapies. For you, that means working on relationships and life changes can lift a low mood.

View study on PubMed

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How it works

IPT treats depression as something that plays out in a social world. When mood drops, communication thins, conflict hardens, and you either withdraw or push, which then gives the depression more to feed on. Your therapist helps you name that loop without turning it into a character verdict. Together you choose a focus from four problem areas: complicated grief, role disputes, role transitions, or interpersonal gaps, the last of which is a plain way of saying there are not enough, or not the right kind of, close relationships to lean on.

Sessions then stay close to recent interactions. You might replay a conversation, notice where you went quiet, and try a different way of asking for something or setting a limit. The techniques are practical: clarifying what you feel, saying it more directly, grieving what is gone, and building or repairing a relationship that can hold you. You practise between sessions in real conversations, because IPT does not believe the change happens only in the hour. The time limit is part of the method. Knowing the work has an ending keeps both of you honest about what this stretch of therapy is for.

What a session looks like

Sessions are usually 50 minutes, once a week over video, and IPT is typically a short course, often around 12 to 16 meetings rather than an open-ended process. The first session is an interpersonal inventory: who is in your life, where it hurts, what changed, and how the depression and those relationships have been shaping each other. After that, hours have a rhythm. You bring a recent interaction, a silence at dinner, a text you didn't send, a visit that went badly, and you slow it down until the feeling and the need are both nameable. Your therapist may ask what you wanted in that moment, what you said, and what it would sound like to say it more plainly. Some sessions are grief work, telling the story of who you lost and what the relationship still asks of you. You can push back if the focus feels wrong, or if a suggested conversation with someone in your life is not safe or not possible. Because it is virtual, you are doing this from the same rooms where those relationships play out, which makes the homework less abstract.

Who It's For, and Who It Isn't

Who it's for. IPT tends to fit people who can point to a relationship, a loss, or a role change and recognize it as part of the depression, even if they also feel ashamed that it got this large. It suits you if you want a time-limited, structured piece of work rather than an open-ended exploration, and if you are willing to practise new conversations between sessions. It is a good fit in the perinatal period, when the role change is enormous and the mood has teeth, and for grief that has become a depression rather than a mourning you can still move in. It also fits people who are tired of therapy that stays inside their head and never quite lands on what happens with the actual humans in their life. You do not need the other person to join the sessions. You do need some willingness to look at how you relate.

Who it isn't for. IPT is a weak match if what you need is bipolar-focused rhythm work, in which case interpersonal social rhythm therapy is the closer fit. It is also the wrong starting point in an acute crisis that needs stabilization, or if you want a long, insight-oriented therapy that stays with early life and does not press toward current conversations. If the main problem is a specific phobia or a habit you want to change with little relational context, a more behavioural approach will likely get you further.

How it compares to other approaches

IPT shares DNA with interpersonal social rhythm therapy, which keeps the relationship focus and adds daily-rhythm work for bipolar disorder. If mood episodes track with wrecked sleep and irregular days, IPSRT is the closer cousin. If the depression is organized around grief, a role change, or a stuck conflict, IPT stays with that social problem and does not ask you to chart rising times. It also overlaps with attachment-based therapy, which looks further back at how you learned to get close and to pull away. IPT is curious about that history, and it spends more of the hour on the current relationship or role that is feeding the mood right now. Attachment work can stay in the pattern for a long time. IPT names an ending and a focus so the present problem gets the airtime. The useful distinction is whether you need a time-limited plan for a present interpersonal problem, or a longer look at the attachment pattern underneath it.

Research Behind This Approach

IPT has a growing evidence base, particularly for depression, where it is one of the better-tested talking therapies and appears in treatment guidelines as a first-line option. Large meta-analyses have compared it with no treatment, with other psychotherapies, and with medication, and there is also a focused body of research on pregnancy and the first year after a birth. The picture is stronger for depression than for every other problem IPT has been tried with, and many trials still carry risk of bias, which is worth saying plainly. That is a strong foundation. It still is not a guarantee for any one person, and results vary with the problem you bring and the relationship you build in the room.

Cuijpers, P., et al. (2011), The American Journal of Psychiatry. A meta-analysis of 38 trials found IPT was associated with moderate improvements in depression compared with control conditions, performed similarly to other psychological therapies, and that combining IPT with medication in maintenance care was associated with lower relapse than medication alone.

Cuijpers, P., et al. (2016), The American Journal of Psychiatry. A comprehensive meta-analysis of 90 trials found IPT had moderate-to-large effects on acute depression compared with controls, may help prevent new depressive episodes, and showed promising effects for eating disorders and anxiety, while noting risk of bias in many studies.

Sockol, L. E. (2018), Journal of Affective Disorders. A systematic review and meta-analysis of IPT during pregnancy and the first year postpartum found it was associated with reductions in depressive symptoms in prevention and treatment studies, and with improvements in anxiety and relationship quality in the treatment studies.

FAQs

What is interpersonal therapy in simple terms?

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Interpersonal Therapy is a short-term talking therapy that treats depression as something that plays out in your relationships and roles, not only in your thoughts. You and your therapist pick a focus such as grief, conflict, a life change, or isolation, and work on how you relate in that area so the mood has less to feed on.

How is IPT different from just talking about my relationships?

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Interpersonal Therapy is structured. You choose one or two problem areas, stay with recent interactions, and practise saying what you feel more directly rather than touring every relationship you have ever had. The time limit is part of the method. The hour is for a present social problem that is feeding the mood, and for trying a different way of handling it between sessions.

How long does interpersonal therapy usually take?

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Interpersonal Therapy is usually a short course of weekly 50-minute sessions, often around 12 to 16 meetings. Some people continue in a thinner maintenance rhythm if relapse risk is high. Because the ending is named from the start, you and your therapist keep coming back to what this stretch of work is for.

Does interpersonal therapy work for grief?

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Grief is one of the four focus areas in Interpersonal Therapy, especially when mourning has stalled or depression has moved in alongside it. The work is to tell the truth about the loss, feel what is still unfinished, and find a way of living that is not organized only around their absence. Results still vary from person to person.

What if the other person won't change?

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Interpersonal Therapy does not require the other person to join, agree, or become someone else. You work on what you can do differently in a dispute, a role change, or a thin social world, including grieving a relationship that will not become what you needed. If a conversation would be unsafe, your therapist should help you plan around that reality rather than push you into it.

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