
Part B: Disability, Identity, and the Limits of Autonomy
An Introduction to Bioethics.
You are the nurse admitting Daniel, 34, who broke his neck in a diving accident four years ago. He is paralyzed from the chest down and uses a power wheelchair. On the intake form, under quality of life, 0–10, you have to record your clinical impression before you’ve really talked to him.
Picture his life. Then write a number.
Note
Most clinicians put a low number. Most patients like Daniel put a high one, and the gap is large and well documented (Gerhart et al. 1994).
The gap shows our predictions are off. It does not settle whether disability is bad in itself, or simply a different way of having a body. Those are two different claims, and they are easy to confuse.

By the end of Part B, you will be able to:
Before we ask whether disability is bad, a prior question: where does the problem live? Three answers have shaped law, medicine, and activism.
| Model | Where the problem lives | The fix it points to | Its blind spot |
|---|---|---|---|
| Medical | in the body: a deficit to diagnose | cure or correct the person | the building and the bus never come up for review |
| Social | in the environment: barriers and design | change the world, not the body | some burdens (pain, fatigue) no ramp can fix |
| Interactional | in the meeting of body and world | both, weighed case by case | demands judgment; there is no formula |
The medical model is the frame of the chart and the care plan. The others ask what it leaves out.
The social model, forged by disabled activists in the 1970s, splits impairment (a feature of your body: you can’t walk) from disability (what a society does with that feature: it builds only stairs).
The wheelchair didn’t change between the two rows. The building did.

Curb cuts, won by wheelchair users, now serve strollers, suitcases, and bad knees. Ezekielf, via Wikimedia Commons. CC0 1.0.
The pure social model overreaches, and Tom Shakespeare says so from inside the disability movement (Shakespeare 2006). Build every ramp in the world, and a degenerative condition still brings pain and fatigue that no ramp touches.
In 1999, Gary Albrecht and Patrick Devlieger interviewed 153 people with disabilities. More than half (54%) of those with moderate to serious disabilities reported good or excellent quality of life, while outsiders, including health professionals, predicted the opposite (Albrecht and Devlieger 1999).
What it shows
Your quality-of-life predictions about disabled patients are systematically miscalibrated. Ask; don’t assume.
What it doesn’t show
That disability is no loss at all. Critics argue adaptation can mask real deprivation: a person can rescale “a good day” and report contentment while still being worse off on things that matter.
So the paradox unsettles the bedside, but it does not settle the philosophy. That is the next question.
The question the rest of the lecture orbits: is disability bad in itself, or only bad because of how the world is arranged?
Mere difference
Elizabeth Barnes: disability is a difference, like being gay or left-handed, not in itself a harm (Barnes 2016). Its burdens are largely social, and it can carry goods: community, perspective, skills.
Bad difference
Greg Bognar and others: disability is, on balance, a real bad that we have reason to prevent, even in a perfectly just society (Bognar 2016). A just world removes the stairs, not the condition.
Both sides accept the paradox data. They disagree about what it shows.
We’ll track the two views across three hard cases. Each cell will record what a view would say, not which view wins, so you can see what holding a view consistently costs you.
| Case | Mere difference would say… | Bad difference would say… |
|---|---|---|
| Selective abortion after prenatal testing | ? | ? |
| Choosing a Deaf embryo | ? | ? |
| Amputating a healthy limb on request | ? | ? |
Prenatal screening lets parents test for conditions like Down syndrome and end the pregnancy. Adrienne Asch, a bioethicist who was herself blind, pressed the expressivist objection: selecting against a trait says something about people who live with it (Asch 1999).
What she did not argue
Asch did not argue for banning abortion, or against reproductive choice. Her target was the framing: testing offered as routine, with disability described only as a list of deficits.
What she demanded
If you offer the test, offer an honest picture of the life, not just the diagnosis: what a day with Down syndrome is actually like, from people who live it.
The Expressivist Objection
After Adrienne Asch, “Prenatal Diagnosis and Selective Abortion” (1999)
The replies
Everything rides on premise 3. If disability is a bad difference, the “message” may be true rather than a slander.
Some Deaf couples have sought to choose a Deaf embryo. Savulescu’s procreative beneficence says no (Savulescu 2001).
Against Selecting for Deafness
After Julian Savulescu, “Procreative Beneficence” (2001)
Note
The mere-difference reply attacks premise 2. Deafness opens a language and a community as much as it closes options. The lives aren’t ranked, just different.
A Deaf couple comes to your fertility clinic. Both are fluent in ASL and deeply embedded in the Deaf community, and they ask to select an embryo that will be Deaf, the same way another couple might hope for a child who shares their language.
You are on the clinic’s ethics committee.

An ASL interpreter teaches the basics, RAF Mildenhall, 2018. U.S. Air Force photo by Brandon Esau. Public domain.
Note
A distinction the cases never named: welfarist vs. perfectionist reasons. A welfarist asks only whether the child’s life goes well for the child. A perfectionist asks whether a capacity (hearing) is worth having in itself, however content its absence leaves you.
Most “select out but not in” policies quietly rely on a perfectionist premise (hearing is better, full stop) while presenting themselves as neutral. That doesn’t make the policy wrong. It locates its real commitment.
Some people feel a persistent, distressing sense that a healthy limb is not theirs and should be removed. The WHO now classifies this as body integrity dysphoria (ICD-11). It pushes respect for autonomy to its edge.
Important
The Robert Smith case (Falkirk, Scotland, late 1990s)
Surgeon Robert Smith amputated the healthy legs of two patients who had sought the operation for years and reported relief afterward. When the cases became public, the hospital stopped the practice. Michael First’s later study of similar patients found the desire was stable, specific, and long-standing: not a delusion or a passing wish (First 2005).
When a competent adult calmly and persistently asks to remove a healthy part of their own body, what does respect for autonomy require?
The Autonomy Argument for Amputation
After Tim Bayne and Neil Levy, “Amputees by Choice” (2005)
Pushback: premise 1 (removing healthy tissue may exceed a doctor’s role) and premise 3 (“nothing else works” is far from settled).
You sit on a hospital ethics board. A colleague argues: “Body integrity dysphoria and gender dysphoria have the same shape: distress at a bodily feature, a request to alter the body, relief when we do. If we accommodate one, consistency demands we treat them alike.”
Another colleague answers: “Same shape, different substance. The analogy is a rhetorical trap.”
Note
The distinction that removes most of the heat: structural analogy vs. evidential analogy.
Two conditions can share a structure (distress, a request to alter the body, relief) while differing entirely in their evidence: how large the outcome studies are, how reversible the intervention is, how the diagnosis behaves over time. An argument that rides the structural likeness all the way to “treat them identically” has skipped the evidential question, which is the one doing the real work.
So the analogy isn’t simply true or false. It holds at the level of form and may break at the level of evidence.
The miscalibration from earlier has a clinical name: diagnostic overshadowing.
Diagnostic overshadowing
Blaming a patient’s new symptoms on their existing disability instead of investigating them as you would in anyone else. A patient with cerebral palsy reports chest pain, and it’s filed under “his baseline.” A patient with an intellectual disability grows withdrawn, and no one checks for depression or pain.
The countermeasure is a habit: ask whether you’d order this workup for a patient without the disability, and if so, order it.
Disabled patients get worse care, and not mainly because of their bodies.

Person-first or identity-first? “Person with a disability” puts the person first. “Disabled person” (and capital-D Deaf, Autistic) is claimed with pride by many. There’s no single correct form: ask, and use what the patient uses.
“Nothing about us without us.” The disability-rights slogan, translated for the bedside: speak to the patient, not the companion pushing the chair. Presume capacity. Ask what help they want before you give it.

Chona Kasinger for Disabled And Here. CC BY 4.0.
| Case | Mere difference would say… | Bad difference would say… |
|---|---|---|
| Selective abortion | screening framed as tragedy rests on a false premise | a real loss may be prevented, but the message still warrants care |
| Choosing a Deaf embryo | selecting for Deafness is coherent, like any valued trait | choosing a worse-off life for a child who can’t consent |
| Amputating a healthy limb | a settled identity claim deserving accommodation | distress to be treated, not a difference to affirm |
Read down a column: can either view hold up across all three cases? Read across a row: notice how much each verdict was fixed by a premise chosen early. The map decides nothing; it shows where the decision actually lives.
We began with a gap: clinicians predict low quality of life for disabled patients, and patients report high. That disability paradox unsettles the bedside but leaves open whether disability is a mere difference or a bad difference. We tracked that dispute across selective abortion, Deaf embryo selection, and body integrity dysphoria, and tested the analogy to gender dysphoria by mapping it rather than asserting it. The disagreements are about premises and evidence, not about who cares more.
Recall
State the medical, social, and interactional models of disability in one sentence each, and say where each locates “the problem.”
Apply
A hospital is designing a survey that asks nurses to rate incoming patients’ quality of life. Using the disability paradox, name one concrete way this could harm disabled patients, and one safeguard you’d build in.
Debate
Should a competent adult with body integrity dysphoria ever be able to obtain surgery to remove a healthy limb? Defend your answer using the autonomy argument and at least one objection to it.
Bioethics OER · CC BY-NC 4.0 · Brendan Shea