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Vocabulary flashcards covering behavioral engagement, operant reinforcement schedules, cognitive biases, and psychological design hooks utilized in modern media and gaming.
Infinite Scroll
A web and interface design mechanism that continuously feeds new content as the user scrolls downward, eliminating natural stopping points to sustain user attention.
Streaks
Engagement mechanics that require users to repeat a targeted behavior at consistent intervals, turning the preservation of continuous daily activity into a primary goal.
Zeigarnik Effect
A psychological principle, identified by Bluma Zeigarnik, demonstrating that individuals recall interrupted or incomplete tasks better than completed ones due to unresolved cognitive tension.
Cliffhangers
Narrative devices used in media that exploit the tension of unfinished storylines to leave key questions unanswered and compel audiences to return.
Negativity Bias
The psychological tendency for human attention to be drawn more readily to negative stimuli than positive stimuli, causing individuals to inspect and dwell on negative content longer.
Operant Conditioning
A learning framework wherein the rate or likelihood of a behavior is modified by the systematic delivery of reinforcing or punishing stimuli.

Fixed Ratio (FR) Schedule
A schedule of operant reinforcement where a reward is delivered only after a specific, predetermined number of responses (such as every 5 responses), creating a characteristic post-reinforcement pause pattern.

Variable Ratio (VR) Schedule
A schedule of operant reinforcement where rewards are provided after an unpredictable number of responses that averages out to a set target (such as slot machines averaging a payout every 100 plays), generating very steep and persistent response rates.

Fixed Interval (FI) Schedule
A reinforcement schedule where the first target behavior is reinforced only after a set, invariable duration of time has elapsed (such as every 5 minutes), producing a distinct scalloped response curve.

Variable Interval (VI) Schedule
A reinforcement schedule where reinforcement becomes available after varying, unpredictable blocks of time that fluctuate around a specific mean (such as on average every 5 minutes), producing steady, moderate responding.

Nucleus Accumbens (NAC)
A primary brain reward region that demonstrates a significantly elevated blood oxygen level-dependent (BOLD) functional MRI response to unpredictable rewards compared to predictable rewards.
Social Rewards
Interpersonal validation metrics delivered across platforms (such as the Facebook 'Like' button) that function on unpredictable schedules to reinforce repeated checking.
Social Hooks
System notifications and interactive prompts (such as being tagged by others or alerts about friends' actions) designed to draw inactive users back into an application.
Short-Term Gaming Rewards
Frequent, immediate reinforcers in video games—such as points, coins, sound and visual effects, or newly unlocked options—engineered to reinforce continuous gameplay.
Near Wins
Outcomes in games or gambling where the participant falls barely short of success, serving as an exceedingly powerful motivational trigger that prompts immediate retries.
Zone of Proximal Development (in Gaming)
The game design practice of balancing challenge and player skill by making early stages low-skill and allowing quick early level progression to maintain engagement without causing frustration.