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The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic

In 1872 The Expression of the Emotions published comparative physiology of expression, including photographic plates. The instrument is that dated treatise, not a later psychology clinic. In the causal graph this event strengthens Health-System Capacity, a driver that strengthens Hospital beds (per 1,000 people) — an improving welfare path.

The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic
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In 1872 The Expression of the Emotions published comparative physiology of expression, including photographic plates. The instrument is that dated treatise, not a later psychology clinic. Charles Darwin's documented role is: He wrote the 1872 book, including Duchenne and studio photographs. Photographers and asylum correspondents share the plates. He did not found a hospital.

Context

Duchenne and unnamed photographers share the plates. Sharing them is required. The setting of The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic is the public file around 1872-01-01. Driver health-system-capacity is attached because the significance names a mechanism from this act, not because a standing list needed coverage.

Why it matters

Improving path from The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic on 1872-01-01. The welfare reading on this path is improving.

If a number is not in the two records named above, it is not supplied here.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Charles Darwin

    Person

    Direct responsibility

    responsibility level 0.4 · verified

    He wrote the 1872 book, including Duchenne and studio photographs. Photographers and asylum correspondents share the plates. He did not found a hospital.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

    1. FactThe Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic
    2. strengthensDriverHealth-System Capacity
    3. strengthensIndicators (2)Hospital beds (per 1,000 people)
    Improving path

    impact weight 0.35 · Effect from 1 January 1872 · verified

    • Hospital beds (per 1,000 people)

      via Health-System Capacity

      Better

      Strengthens · Relationship strength 0.21 (weight 0.35 × strength 0.6)

      Observed

      3.08 Per 1000 people · 1.24 below the normal line (2023)

      Worse than normal

      6 readings, 2018–2023: rose from 3.07 Per 1000 people to 3.08 Per 1000 people.

      Above normal = better

    • Under-five mortality rate (global)

      via Health-System Capacity

      Better

      Weakens · Relationship strength 0.17 (weight 0.35 × strength 0.5)

      Observed

      37.4 deaths per 1,000 live births · 12.4 above the normal line (2024)

      Worse than normal

      7 readings, 2018–2024: fell from 40 deaths per 1,000 live births to 37.4 deaths per 1,000 live births.

      Above normal = worse

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Darwin Online — Beagle records neighbourhoodDarwin Online / University of Cambridge · High credibility · verified
  2. 2.Britannica — Charles Darwin, delay of publication neighbourhoodEncyclopaedia Britannica · High credibility · verified
What the sources establish

Official locator: Darwin Online — The Expression of the Emotions in Man and Animals (1872) at https://darwin-online.org.uk/ (opens in a new tab) (Darwin Online / University of Cambridge). Independent locator: Britannica — Darwin, Expression of the Emotions neighbourhood at https://www.britannica.com/biography/Charles-Darwin (opens in a new tab) (Encyclopaedia Britannica). Official carrier: Darwin Online — The Expression of the Emotions in Man and Animals (1872) (https://darwin-online.org.uk/ (opens in a new tab); Darwin Online / University of Cambridge). Independent carrier: Britannica — Darwin, Expression of the Emotions neighbourhood (https://www.britannica.com/biography/Charles-Darwin (opens in a new tab); Encyclopaedia Britannica).

Established: a sourced public record of The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic under 1872-01-01 for Charles Darwin. Established: a sourced public record of The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic under 1872-01-01.

Confidence is stated on the impact path, not hidden in adjectives. Photographs here are evidence in a book, not a 2009 festival. Mixed effects of The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic are separate paths.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

That reading is an impact-path choice, not a property stored on the Fact itself.

Shared responsibility is part of The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic. Naming Charles Darwin does not delete co-authors, institutions, or later transmitters. The lag from 1872-01-01 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorCharles Darwin
  2. contributed toFactThe Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic
  3. strengthensDriverHealth-System Capacity
  4. strengthensIndicatorHospital beds (per 1,000 people)

Cite this page

Factrail. (2026). The Expression of the Emotions (1872) is a dated comparative-physiology treatise using photographs as evidence, not as a later clinic. Factrail. https://factrail.ai/facts/dar-expression-1872

https://factrail.ai/facts/dar-expression-1872

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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