EVIDENCE CLAIM
Motivation includes effort-based decision processes in which the value of an outcome is weighed against the work required to obtain it.
- Evidence category
- Emerging or mechanistic evidence
- Claim type
- Mechanistic
- Last reviewed
- August 11, 2026
This page isolates one claim from the wider argument of The Human OS Manual.
The classification describes the evidence supporting this claim, not the Human OS framework as a whole.
What the evidence supports
Salamone and colleagues review activational and effort-related aspects of motivation, including evidence that organisms choose among actions partly according to effort requirements and expected value, with dopamine participating in a broader distributed network.
What it does not establish
The review does not imply that motivation can be reduced to a single cost-benefit calculation, that dopamine is a simple reward chemical, or that every everyday decision is governed by the same neural mechanism.
Context
This is the narrower mechanistic component of EN 23.2. It is kept separate from COM-B so a conceptual framework and a neurobehavioral mechanism are not conflated.
Evidence classification
Emerging or mechanistic evidence
Developing findings or mechanisms that help explain possibility without establishing universal outcomes or direct real-world effects.
Sources
Sources are listed according to the role they play in this claim. One source may provide direct support, another may explain a mechanism, establish a limitation, or prevent an interpretation from becoming broader than the evidence allows.
Primary support
John D. Salamone, Samantha E. Yohn, Laura López-Cruz, Noemí San Miguel, and Mercè Correa, “Activational and Effort-Related Aspects of Motivation: Neural Mechanisms and Implications for Psychopathology,” Brain 139, no. 5 (2016): 1325–1347, https://doi.org/10.1093/brain/aww050.
journal article · narrative review
Reviews effort-related choice and activational components of motivation.
Where this appears in the book
The printed book preserves the claim inside the argument that gives it meaning. These references connect the current digital record to the first-edition evidence trail.
Chapter 23: Why Most Change Fails
Behavior depends on capability, opportunity, motivation, and how effort is weighed against expected value. · First edition, 2026
Human OS connections
This claim connects to the following parts of the Human OS architecture. The module labels locate the claim inside the framework; they do not imply that the research source validates the architecture itself.
Read the argument in context
The Evidence Map separates one claim from the wider architecture. The Human OS Manual connects the evidence across biology, behavior, environment, recovery, adaptation, relationships, and time.