The dual control model of sexual response, developed by researchers Erick Janssen and John Bancroft at the Kinsey Institute and later brought to wider attention by Emily Nagoski in *Come As You Are* (2015). ## The Core Model Sexual response is governed by two competing systems: **The Accelerator (SES — Sexual Excitation System)** Continuously scanning the environment for sexually relevant stimuli — touch, imagery, smell, context, thought — and sending *go* signals to the brain. **The Brake (SIS — Sexual Inhibition System)** Simultaneously scanning for reasons *not* to respond — threat, stress, distraction, relational unease, wrong conditions — and sending *stop* signals. Sexual response at any moment is the net result of these two systems operating simultaneously. More accelerator than brake produces arousal. More brake than accelerator inhibits it regardless of how much accelerator is present. ## The Critical Insight The common assumption is that low arousal means insufficient stimulation — that the accelerator needs more input. In many cases the more accurate picture is that the brake is too strongly engaged. Adding more accelerator input when the brake is active does not produce arousal — it often increases activation of the brake. The question shifts from *how do I add more stimulation?* to *what is engaging the brake, and how might that be addressed?* ## Individual Variation People vary significantly in both accelerator sensitivity (how easily turned on) and brake sensitivity (how easily inhibited). Neither extreme is inherently better or worse — but understanding one's own settings, and those of a partner, is practically very useful. High brake sensitivity is commonly associated with stress, relational tension, conditions feeling wrong, pace being too fast, or a sense of not being fully seen or present. These are not character flaws — they are the brake system doing its job. ## Broader Application Though developed in the context of sexuality, the dual control model has broader applicability. The same accelerator/brake logic applies to emotional engagement, creative states, and social presence — any context where the question is why genuine engagement is or is not possible under given conditions. ## Key Texts - Emily Nagoski — *Come As You Are* - Janssen & Bancroft — original SES/SIS research ## Related Notes [[Feelings & Needs MOC]] | [[Need - Ease]] [[Need - Autonomy]] | [[Overwhelmed]] [[Withdrawn]]