Fertility, survival and the origins of agriculture: an abstract-only argument
This abstract argues that rising adult survival in the Paleolithic, not a pre-agricultural fertility rise, may have driven the adoption of agriculture; the Neolithic fertility increase is presented as a consequence, not the cause. [1]
Automatic summary · not editorially reviewed
The key findings
The source at a glance
- Study type / format
- Abstract presenting a theoretical argument; no empirical study design is reported.
- Population / context
- Human ancestors in the Paleolithic and Upper Paleolithic, described in general terms; no specific sample is reported.
- Summary based on
- Study abstract
- Publication status
- Preprint · peer-review status not confirmed
- Original publication
- October 19, 2026
Abstract questions the fertility-first explanation
The source is an abstract about why human ancestors moved from small nomadic foraging bands to larger, more permanent farming settlements. It notes that no satisfactory explanation has been found. One approach, based on the Demographic Transition Model, proposes that a rise in fertility can be detected before agriculture was adopted. The author says this approach does not clearly explain what triggered that earlier fertility rise.
Supporting source [1]
Author proposes reversed demographic pressure
The author sets out an alternative in which demographic pressure runs in the opposite direction. The argument notes that adult survival rose through the Paleolithic. If hunting and gathering is sufficiently density-dependent to hold the intrinsic rate of increase near zero, then rising survival in the Upper Paleolithic must have been absorbed by falling fertility. The compensation need not stop at the replacement point: an overshoot drives the growth rate below zero. Agriculture is then described as a rescue adopted by populations that can recognize the need to adapt and that have dependable harvestable resources within reach.
Supporting source [1]
Sedentism releases an already binding constraint
On this account, settling down releases a fertility constraint that was already binding. That is why the Neolithic Demographic Transition looks like a step change at the transition, even though its cause precedes it. The abstract presents this as an argument, not as tested evidence; it reports no data, sample, comparison or statistical test. It therefore cannot show that the proposed sequence actually occurred.
Supporting source [1]
How to interpret this
Abstract only; the full text was not reviewed. The source reports no data, sample, comparison or statistical test, so the proposed sequence is an argument, not demonstrated evidence.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Kelly KM. · europepmc.org · October 19, 2026