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🔍 '''Selection''' refers to the tendency of insurance applicants or policyholders to make choices — about whether to buy coverage, how much to buy, or when to file claims — based on their private knowledge of their own risk profile. In [[Definition:Underwriting | underwriting]] and [[Definition:Actuarial science | actuarial]] contexts, the term most commonly appears as "adverse selection" or "anti-selection," describing the phenomenon where individuals who expect higher-than-average losses are disproportionately drawn to purchase or retain insurance. The concept sits at the heart of how insurers price, design, and distribute products.

⚙️ Insurers manage selection through a combination of [[Definition:Risk classification | risk classification]], [[Definition:Medical underwriting | medical underwriting]], policy design features like [[Definition:Deductible | deductibles]] and [[Definition:Waiting period | waiting periods]], and enrollment rules such as open-enrollment windows in [[Definition:Group insurance | group insurance]]. When a [[Definition:Insurance carrier | carrier]] offers a generous product without adequate controls, lower-risk individuals may opt out or choose cheaper alternatives, leaving the pool skewed toward higher-cost members — a dynamic sometimes called a "death spiral." Conversely, favorable selection occurs when an insurer's underwriting or pricing inadvertently attracts healthier or lower-risk populations, temporarily boosting [[Definition:Loss ratio (L/R) | loss ratio]] performance but potentially masking future volatility.

💡 Getting selection dynamics right is arguably one of the most consequential challenges in insurance. Misjudging who is entering the risk pool can erode [[Definition:Profitability | profitability]] far faster than incorrect trend assumptions or poor [[Definition:Claims management | claims management]]. Regulators also pay close attention: in markets like [[Definition:Health insurance | health insurance]], rules around [[Definition:Guaranteed issue | guaranteed issue]] and [[Definition:Community rating | community rating]] exist precisely because unchecked selection can make coverage unavailable or unaffordable for high-risk individuals. For [[Definition:Insurtech | insurtech]] companies leveraging new data sources and [[Definition:Predictive analytics | predictive analytics]], the ability to refine selection — without crossing regulatory or ethical lines — represents both a competitive advantage and a reputational risk.

'''Related concepts:'''
{{Div col|colwidth=20em}}
* [[Definition:Adverse selection]]
* [[Definition:Risk classification]]
* [[Definition:Underwriting]]
* [[Definition:Moral hazard]]
* [[Definition:Community rating]]
* [[Definition:Experience rating]]
{{Div col end}}

Definition:Selection - Revision history

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