M14establishedTier 1

Reproductive Motivation

Fisher's three-system model. Independent from M2 pursuit. HPG axis, not just brain circuits.

In plain languageThree components - desire, attraction, and pair bonding - that can work independently of each other. This system shapes much more of human behavior than reproduction itself.

Resolution Conditions - what actually satisfies this system

Sexual fulfillment within pair bond + pair bond stability + reproductive success.

The gradient below reads this same condition as a spectrum: its top level is this condition, and each step down supplies less of it.

Proxy gradient

Resolving function less of it at every step
real partnerFULL resolution met

The need is real and (largely) supplied at this level.

Where this mechanism sits - convergence, evidence, cases, applications
Forced by convergence
Evidence
62 evidence links indexed
Seen in (demonstrations)
none recorded
Used in (applications)
Operationalization
not yet operationalized

Codes link to their surface where one exists, and read as plain text where it has not been built yet.

Operationalization From reference to test

Not yet operationalized for M14.

For Reproductive Motivation this work has not been done yet, so nothing is shown here rather than padded out.

operationalization: not yet derivedworked example: M3
Mismatch Prediction
Pornography, dating apps, delayed reproduction, social media mate-value comparison.
Phylogenetic Depth
~500Myr sexual, ~200Myr pair bonding
deepest circuit - hardest to adapt. Severity tracks inversely with the age of the targeted circuit.
Cascade
Suppresses
Suppressed by
Interacts with
Evidence
Panksepp, Fisher, Buss, Trivers, Hrdy
62evidence linksindex in progress
Sex-Differentiated Implementation

Female-typical

VMH-centered, estrous cycling, resource/commitment signals preferred, pair bond security emphasis.

Male-typical

POA-centered, tonic testosterone, fertility/accessibility cues, sexual variety emphasis.

Forced by convergence C14 Reproductive Motivation as Distinct Architecture