DLPFC, aPFC/frontopolar cortex, vmPFC/OFC, dACC, basal ganglia/striatum, SMA/pre-SMA, frontoparietal control network
In plain language
A person can want to do something, understand why it matters, know how to do it, and still fail to start. That visible endpoint does not tell us which part of the goal-to-action transition failed.
The framework separates several candidate sources of non-initiation: whether a concrete next action has been constructed, whether the target action policy actually wins against alternatives, whether onset depends disproportionately on external support, and whether entering the task carries a transition-sensitive initiation cost. The distinctions are treated as hypotheses to test, not as fixed modules that must exist independently.
Abstract
Failure to begin an intended task is often interpreted as evidence of weak motivation, insufficient intention, or poor executive control. For motivation science, however, non-initiation is an underidentified endpoint: a person can endorse a superordinate goal (G = 1) yet fail to cross an objective initiation criterion (YI = 0) for functionally different reasons. This conceptual article proposes a candidate identification framework for the goal-to-action transition. It distinguishes action construction (F1), local target-policy selection (F2), a self-generated-versus-externally-supported onset contrast (F3), and transition-sensitive initiation cost (F4), while treating downstream execution failure as a separate endpoint. The framework specifies ordered perturbations, proximal measures where noncircular assays are available, explicit conditioning on local policy selection before onset contrasts, and prospective rules for mediation, nesting, merger, dropping contrasts, invalid tests, and lower-dimensional alternatives. F3 remains operational because no independent proximal assay is currently established, and F4 remains a broad transition-sensitive family. The proposal builds on established intention-behavior, Action Control Theory, implementation-intention, control-allocation, and target-engagement literatures; its residual contribution is an ambiguity-reduction architecture for task initiation. It offers a falsifiable conceptual program rather than a validated biological factorization.
Why it matters
Task-initiation failure is often used as evidence for broad explanations such as low motivation, poor self-control, procrastination, or executive dysfunction. Those descriptions may be useful, but the same failure-to-start endpoint can be produced by different functional organizations.
By ordering perturbations and making conditioning requirements explicit, the framework asks what additional observation would actually reduce ambiguity after non-initiation is observed. It also includes rules for collapsing distinctions when simpler or established accounts explain the data just as well.
The goal is not to add another general theory of motivation. It is to make causal attribution at the initiation boundary more disciplined, so a shared behavioral endpoint is not mistaken for a uniquely identified underlying cause.