The genogram is not a family map; it is a family narrative in symbols. Forgetting this means confusing the map with the territory — and treating a hypothesis as if it were a finding. Mature genogram work recognises its own limits, without abandoning the method as a result.

The Genogram as a Co-Construct

If the same family were to draw their genogram with the same practitioner on five different days, five different genograms would emerge. This is already an epistemic fact: What appears in the genogram is not what is, but what was said on that day, for that occasion, to that practitioner. Bateson formulated it categorically: "The map is not the territory." McGoldrick and colleagues state explicitly in the 4th edition of their standard work that the genogram is always a co-constructed representation — jointly created by client and practitioner, at a particular stage of their relationship.

This insight is not relativistic. There are indeed verifiable facts (dates of birth, dates of death, legal kinship), and there are typical distortions that practitioners should be aware of. But the meaning of a family configuration — who is "close", who is the "black sheep", who "sacrificed everything for the family" — is constructed, not measured.

Typical Distortions

Memory distortion. Autobiographical memory is reconstructive, not reproductive. Data from early childhood are particularly unreliable, and information about the grandparent generation is even more strongly shaped by family narratives. When someone confidently says "my grandmother was always strict", they are often drawing on two or three key stories — which may not be untrue, but replace a cluster that was far more heterogeneous in real life.

Family myths. Every family has stories that have been told so often they are taken as fact — "we come from a farming family", "uncle didn’t experience anything bad in the war". These myths organise the family’s self-understanding, but regularly cover up deviations. Stierlin described them as "delegated mandates": What the family tells about itself is a programme.

Idealisation and demonisation. Deceased, beloved grandparents tend to be idealised; figures of conflict (the alcoholic father, the cold mother) tend to be exaggerated. Neither is a mistake, but a function: The self stabilises more easily around polarised figures than around ambivalent ones.

Taboo gaps. What cannot be spoken about is also not drawn. Suicide, sexual abuse, children born out of wedlock, mental illness, abortion, Nazi involvement — the "blank spaces" in a genogram are often the most interesting. Experienced practitioners listen for the silence.

Suggestive effects. The practitioner is themselves part of the distortion. Someone who asks about "conflict between mother and daughter" will hear more about conflict than someone who asks about "the relationship between mother and daughter". Genogram work is never non-directive.

Multiperspectivity — The Same System, Different Pictures

Systemic family interviews regularly show: Siblings remember their childhood family differently, sometimes with barely any overlap. This is not an error, but information: Each person experienced a different family — different role, different alliances, different timeframe. The methodological consequence is not to find the "correct" version, but to accept multiperspectivity as a finding in its own right. In network meetings (see Lesson 18), this has practical implications.

State of Research: Thin Evidence for Reliability

There are surprisingly few empirical studies on the interrater reliability of the genogram. There are several reasons for this. First, the genogram is understood as a tool, not a test — testing for reliability would be a category error. Second, the method is highly context-dependent: What is drawn as a "close relationship" depends on the practitioner and the occasion. Third, the genogram is dynamic: It changes over the course of treatment — and is meant to.

What the few empirical studies do show: Structural information (kinship, dates) is recorded relatively consistently between raters, as long as the same raw data are available. Interpretative information (quality of relationships, intensity of conflict) varies considerably. Steinke has argued in qualitative social research that "reliability" may not even be the appropriate criterion — instead, intersubjective comprehensibility and coherence of reconstruction should take precedence. This is doubly true for genogram work.

A Self-Critical Stance — What It Means in Practice

Self-critique is not a style, but a set of concrete practices:

  • Hypothesis, not diagnosis. Always use the subjunctive in genogram commentary: "It could be that…", "a recurring pattern appears…". The precision of the language reflects the epistemic situation.
  • Source attribution. What is verified information (civil registry extract), what is a client statement, what is hearsay ("my mother once mentioned"), what is the practitioner’s own hypothesis? In clinical documentation, and especially in forensic contexts (Lesson 8), this distinction is essential.
  • Updating. The genogram may age, but it must not remain static. After each major therapeutic step — and at least annually in long-term cases — it is worthwhile to redraw it together. What emerges, what disappears, what shifts, is often the real result.
  • Reflecting on one’s own resonance. If the practitioner finds a figure in the genogram particularly likeable or unlikeable, this is information in itself and material for supervision (see Lesson 20).
  • Allowing multiple versions of the genogram. In couple and family work, it may be methodologically more fruitful to have each person draw their own genogram rather than forcing a consensus version.

The Map Changes the Territory — Performative Effects

A second epistemic complication arises: The genogram changes what it depicts. Drawing a genogram with a family directs attention to certain people, opens up conversations about certain topics, sorts relationship qualities — and thus the family system itself changes, often subtly, sometimes markedly. Bateson would have described this as a second-order observer effect: The description acts back on what is described.

Clinically, this is a factor of effectiveness — genogram work should bring about change. Methodologically, it is an additional warning against naïve realism: What the genogram shows at the second session is not "the family before the first session", but the family that has already done a genogram once. Anyone who creates multiple versions over time documents not only changes in reality, but also their own traces.

Practice Vignette

After two years of therapy, a 45-year-old client redraws her genogram. The grandmother, who in the first version was clearly "the strong woman who held everything together", now appears as an ambivalent figure: strong, but also suffocating; generous, but controlling. The therapist could interpret this as a "distortion of the first version". A wiser reading is the opposite: Both versions are correct — for their time. Over two years, the client has learned to tolerate ambivalence. That is the result, made visible in the comparison of the two images.

State of Research & Discussion

Familiendynamik (Klett-Cotta) has published several reflective articles on the method in recent years; the tone is consistent: The genogram is an established, clinically useful heuristic, but not a diagnostic instrument in the psychometric sense. In the international discourse (Family Process, JMFT), the epistemological self-location is less pronounced — there, the genogram is treated more pragmatically. The German-speaking systemic tradition has a reflective advantage here, which is also evident in training (German Association of Systemic Therapy and Family Therapy (DGSF)/SG curricula emphasise its constructed nature).

An open research gap concerns the predictive validity of the genogram: Which genogram features actually predict the course or outcome of therapy? There are promising approaches here, but no consolidated body of findings. As long as this is the case, methodological modesty in interpreting findings is required.

Another line of discussion concerns the relationship between the genogram and standardised questionnaires (FACES, FB-A, EMBU). While questionnaires provide a measurable, comparable data base, the genogram is highly idiographic. Both approaches are complementary, and good research combines them — the genogram provides the hypothesis, the questionnaire the scaling. Anyone who uses only one sees less than is necessary.

Cross-References

  • M1 "What is a Genogram"
  • M2 "Hypotheses vs. Diagnoses"
  • M4 Lesson 11 (Siblings — Replication Crisis)
  • M4 Lesson 15 (Research Method)
  • M4 Lesson 20 (Practitioner’s Own Genogram — Personal Resonance)

Further Links

  • https://www.carl-auer.de/magazin/systemisches-lexikon/genogramm
  • https://elibrary.klett-cotta.de/journal/fd
  • https://www.socialnet.de/lexikon/Genogramm
  • https://www.dgsf.org/