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Gaming Increases Intelligence Over Time: Groundbreaking Longitudinal Study

Major longitudinal study of children shows gaming positively impacts intelligence gains over 2 years, controlling for genetics and socioeconomic factors

Klaus Decaux
September 7, 2025

The Intelligence Revolution: Gaming’s Long-Term Cognitive Impact

A groundbreaking longitudinal study published in Scientific Reports has shattered conventional wisdom about video gaming and intelligence. The research, involving thousands of children tracked over two years, provides definitive evidence that gaming doesn’t just correlate with higher intelligence—it actively increases intelligence over time.

This landmark study, conducted by Dr. Brendan Sauce and colleagues at the Karolinska Institutet and Vrije Universiteit Amsterdam, represents the most rigorous investigation into gaming’s long-term cognitive effects ever conducted, controlling for genetics, socioeconomic background, and other confounding factors.

The Revolutionary Study Design: Science at Its Best

Longitudinal Methodology

This isn’t another cross-sectional snapshot—it’s a true longitudinal investigation tracking the same children over time:

Study Parameters

  • Duration: 2-year follow-up period
  • Sample Size: Thousands of children
  • Age Range: 9-10 years at baseline
  • Assessment Points: Comprehensive testing at start and end
  • Control Variables: Genetics, socioeconomic status, and baseline intelligence

Rigorous Controls

The study controlled for factors that could confound results:

  • Genetic differences: Using twin studies and family controls
  • Socioeconomic background: Income, education, and social factors
  • Baseline intelligence: Starting cognitive abilities
  • Time allocation: Hours spent on different activities
  • Other digital media: TV watching and social media use

Intelligence Measurement

The researchers used comprehensive intelligence assessments:

Cognitive Domains Tested

  • Fluid intelligence: Problem-solving with novel information
  • Crystallized intelligence: Accumulated knowledge and skills
  • Working memory: Manipulation of information in mind
  • Processing speed: Speed of cognitive operations
  • Spatial reasoning: Mental manipulation of visual information

Assessment Methods

  • Standardized tests: Validated intelligence measures
  • Multiple timepoints: Pre and post gaming period assessments
  • Comprehensive batteries: Multiple cognitive domains evaluated
  • Objective measures: Non-subjective performance indicators

The Groundbreaking Results: Gaming Increases Intelligence

The Primary Finding

The study’s most important discovery was unambiguous: Gaming positively impacted the amount of change in intelligence so that children who played more video games at 9–10 years showed the most gains in intelligence two years later.

Quantified Intelligence Gains

  • Dose-response relationship: More gaming = greater intelligence increases
  • Significant effect sizes: Meaningful improvements in cognitive ability
  • Persistent effects: Benefits maintained over the study period
  • Broad improvements: Gains across multiple intelligence domains

Universality of Benefits

  • Gender equality: Benefits identical for boys and girls
  • Demographic consistency: Effects across all socioeconomic groups
  • Age stability: Benefits consistent across the age range studied
  • Individual variation: Some children showed greater benefits than others

Controlling for Confounding Variables

What makes this study revolutionary is its rigorous control of alternative explanations:

Genetic Control

  • Twin studies: Separated genetic from environmental effects
  • Family controls: Accounted for shared genetic background
  • Heritability analysis: Distinguished innate from acquired abilities
  • Polygenic scores: Controlled for genetic predisposition to intelligence

Environmental Control

  • Socioeconomic status: Income, education, and social advantages controlled
  • Educational opportunities: School quality and resources accounted for
  • Family environment: Parenting styles and home cognitive stimulation
  • Cultural factors: Language, ethnicity, and cultural background

Media Control

  • Time displacement: Controlled for time spent on other activities
  • TV watching: Compared to passive screen time consumption
  • Social media: Distinguished from interactive gaming
  • Educational apps: Separated from entertainment gaming

The Mechanisms Behind Gaming’s Intelligence Enhancement

Cognitive Training Effects

Gaming provides comprehensive cognitive training across multiple domains:

Executive Function Enhancement

  • Working memory training: Constant maintenance of game state information
  • Cognitive control: Managing competing demands and inhibiting responses
  • Cognitive flexibility: Adapting to changing rules and strategies
  • Planning and strategy: Long-term goal setting and execution

Processing Speed Improvements

  • Reaction time: Faster responses to visual and auditory stimuli
  • Decision speed: Quicker evaluation of complex situations
  • Information processing: Enhanced speed of cognitive operations
  • Parallel processing: Simultaneous handling of multiple information streams

Spatial Intelligence Development

  • Mental rotation: Improved manipulation of 3D objects mentally
  • Spatial memory: Enhanced memory for locations and spatial relationships
  • Navigation skills: Better wayfinding and spatial orientation
  • Visual-spatial integration: Improved coordination of visual and spatial information

Neuroplasticity and Intelligence Growth

Gaming drives neuroplasticity changes that increase intelligence:

Structural Brain Changes

  • Gray matter increases: Physical brain tissue growth in key regions
  • White matter optimization: Enhanced connectivity between brain areas
  • Network efficiency: More streamlined information processing
  • Neural specialization: Dedicated circuits for cognitive operations

Functional Improvements

  • Increased neural efficiency: Same cognitive tasks require less effort
  • Enhanced network coordination: Better communication across brain regions
  • Improved signal-to-noise ratio: Better filtering of relevant information
  • Cognitive reserve development: Enhanced resilience against cognitive decline

Why Gaming Uniquely Enhances Intelligence

Active vs. Passive Digital Media

The study distinguished gaming from other digital activities:

Gaming Advantages

  • Interactive engagement: Active participation drives learning
  • Progressive complexity: Difficulty scales with ability development
  • Immediate feedback: Rapid learning through consequence recognition
  • Intrinsic motivation: High engagement sustains cognitive effort

Passive Media Limitations

  • TV watching: Minimal cognitive engagement or challenge
  • Social media: Limited cognitive skill development
  • Video consumption: Passive reception of information
  • Educational apps: Often limited in complexity and engagement

Multi-Domain Cognitive Challenge

Gaming provides comprehensive cognitive training:

Simultaneous Skill Development

  • Attention training: Selective, divided, and sustained attention
  • Memory enhancement: Working memory, spatial memory, and pattern memory
  • Executive control: Planning, inhibition, and cognitive flexibility
  • Processing speed: Rapid information processing and response generation

Real-World Relevance

  • Complex problem-solving: Challenges similar to real-world scenarios
  • Multi-step planning: Strategic thinking and long-term goal pursuit
  • Adaptation skills: Flexibility in changing environments
  • Decision-making: Evaluation of options under uncertainty

League of Legends: An Intelligence Development Platform

Why MOBAs Excel at Intelligence Enhancement

League of Legends provides ideal conditions for intelligence development:

Cognitive Complexity

  • Strategic depth: Multi-layered decision-making requirements
  • Dynamic environments: Constantly changing conditions requiring adaptation
  • Information integration: Synthesis of multiple data sources
  • Pattern recognition: Identification of optimal strategies and responses

Progressive Development

  • Skill scaling: Increasing complexity as players improve
  • Meta evolution: Continuous introduction of new strategic elements
  • Individual growth: Personal skill development over time
  • Competitive pressure: Motivation to push cognitive boundaries

Multi-Domain Training

  1. Fluid Intelligence: Novel problem-solving in unique game situations
  2. Processing Speed: Rapid response to changing game conditions
  3. Working Memory: Tracking multiple game variables simultaneously
  4. Spatial Intelligence: Map awareness and positioning optimization
  5. Strategic Thinking: Long-term planning and resource management

Real-Time Intelligence Development

Every League match provides intelligence training:

Early Game Intelligence

  • Pattern recognition: Identifying optimal strategies and matchups
  • Risk assessment: Evaluating trade-offs and strategic decisions
  • Information processing: Managing multiple data streams simultaneously
  • Adaptive thinking: Adjusting strategies based on opponent behavior

Mid Game Intelligence

  • Complex planning: Multi-step strategic coordination
  • System thinking: Understanding interconnected game elements
  • Predictive modeling: Anticipating opponent actions and game states
  • Resource optimization: Maximizing efficiency of limited resources

Late Game Intelligence

  • High-stakes decision-making: Critical choices under extreme pressure
  • Team coordination: Collaborative intelligence and shared decision-making
  • Execution precision: Converting strategic plans into tactical actions
  • Performance under pressure: Maintaining cognitive function under stress

The Longitudinal Advantage: Why This Study Matters

Beyond Correlation to Causation

Previous studies could only show correlation between gaming and intelligence. This longitudinal design demonstrates causation:

Temporal Precedence

  • Gaming preceded intelligence gains: Established clear causal sequence
  • Controlled alternative explanations: Eliminated confounding variables
  • Tracked actual changes: Measured intelligence development over time
  • Individual trajectories: Followed specific children’s cognitive growth

Methodological Rigor

  • Large sample size: Statistical power to detect real effects
  • Comprehensive controls: Accounted for all major alternative explanations
  • Validated measures: Used established intelligence assessments
  • Replication potential: Study design allows for replication and extension

Implications for Child Development

The findings revolutionize understanding of cognitive development:

Educational Applications

  • Gaming as learning: Recognition of gaming’s educational value
  • Curriculum integration: Incorporation of gaming elements in education
  • Individual differences: Tailored approaches based on gaming preferences
  • Assessment methods: Gaming-based evaluation of cognitive abilities

Parenting Guidance

  • Informed decisions: Evidence-based approach to gaming limits
  • Quality over quantity: Focus on game selection rather than time restriction
  • Balanced approach: Integration of gaming with other activities
  • Individual monitoring: Attention to child-specific responses

Addressing Common Concerns and Misconceptions

”Gaming Makes Children Less Intelligent”

The research provides clear counter-evidence:

  • Intelligence increases: Direct measurement of cognitive improvement
  • Long-term benefits: Effects persist over extended periods
  • Academic transfer: Skills generalize to educational contexts
  • Universal benefits: Improvements across all demographic groups

”Only Educational Games Help Learning”

The study focused on entertainment gaming:

  • Commercial games: Regular entertainment games showed benefits
  • Engagement factor: Fun games maintain higher participation
  • Complexity advantage: Entertainment games often more cognitively demanding
  • Intrinsic motivation: Enjoyment drives deeper engagement and learning

”Screen Time Is Always Harmful”

The research distinguishes between different types of screen time:

  • Active vs. passive: Gaming provides active cognitive engagement
  • Interactive elements: Gaming requires constant decision-making
  • Skill development: Gaming builds measurable cognitive abilities
  • Individual variation: Effects depend on content and engagement level

Practical Applications for Intelligence Development

Optimizing Gaming for Intelligence Growth

To maximize intelligence benefits from gaming:

Game Selection Criteria

  • Cognitive complexity: Choose games with strategic depth
  • Progressive difficulty: Games that scale with skill development
  • Multiple domains: Games training various cognitive abilities
  • Engagement level: Games that maintain long-term interest

Gaming Protocols for Intelligence

  • Regular practice: Consistent engagement drives neuroplasticity
  • Challenging content: Difficulty should stretch current abilities
  • Reflective practice: Analysis of gameplay enhances learning transfer
  • Balanced approach: Integration with other cognitive activities

Age-Appropriate Intelligence Training

Different ages benefit from different gaming approaches:

Early Childhood (6-8 years)

  • Simple strategy games: Basic planning and problem-solving
  • Educational puzzles: Spatial reasoning and pattern recognition
  • Construction games: Creative thinking and spatial intelligence
  • Age-appropriate complexity: Challenging but not overwhelming

Middle Childhood (9-12 years)

  • Strategy games: Complex planning and resource management
  • Adventure games: Spatial navigation and problem-solving
  • Puzzle games: Logic and spatial reasoning development
  • Social gaming: Collaborative problem-solving skills

Adolescence (13-18 years)

  • Complex strategy games: Advanced planning and system thinking
  • Competitive gaming: Performance under pressure and rapid decision-making
  • Role-playing games: Character development and story comprehension
  • Team-based games: Collaborative intelligence and communication

The Future of Intelligence Enhancement

Gaming as Cognitive Enhancement Tool

The research opens new possibilities for intelligence development:

Personalized Training

  • Individual assessment: Identify specific cognitive strengths and weaknesses
  • Targeted interventions: Gaming programs designed for specific intelligence domains
  • Progress monitoring: Real-time tracking of cognitive development
  • Adaptive difficulty: AI-driven adjustment to optimal challenge level

Educational Integration

  • Classroom gaming: Incorporation of intelligence-enhancing games in education
  • Assessment tools: Gaming-based evaluation of student cognitive abilities
  • Individual learning plans: Customized educational approaches based on gaming performance
  • Teacher training: Educator preparation for gaming-enhanced learning

Technology and Intelligence Research

Emerging technologies will enhance our understanding:

Advanced Measurement

  • Real-time brain imaging: Monitoring neural changes during gaming
  • Biomarker identification: Discovering predictors of intelligence growth
  • Individual differences: Understanding who benefits most from gaming
  • Optimal protocols: Determining best practices for intelligence enhancement

The Saiki Intelligence Assessment

Leveraging the Science of Gaming Intelligence

Saiki applies the research findings to practical assessment:

Intelligence Indicators in Gaming

  • Strategic thinking: Long-term planning and goal achievement
  • Adaptive intelligence: Flexibility in changing game conditions
  • Processing efficiency: Speed and accuracy of decision-making
  • Learning rate: Rate of skill acquisition and improvement
  • Pattern recognition: Identification of optimal strategies

Real-World Intelligence Prediction

  • Academic performance: Gaming performance predicts educational success
  • Professional aptitude: Strategic thinking translates to workplace skills
  • Problem-solving ability: Gaming reveals general cognitive capacity
  • Learning potential: Gaming shows capacity for skill development

Beyond Traditional Intelligence Testing

Gaming-based assessment offers unique advantages:

Ecological Validity

  • Natural engagement: Peak performance through intrinsic motivation
  • Complex scenarios: Real-world-like problem-solving contexts
  • Dynamic assessment: Evaluation of intelligence in changing conditions
  • Sustained performance: Intelligence measurement over extended periods

Individual Differences Recognition

  • Multiple intelligence types: Recognition of diverse cognitive strengths
  • Cultural fairness: Less biased than traditional intelligence tests
  • Engagement-based: Assessment through preferred activities
  • Continuous evaluation: Ongoing measurement rather than single-point testing

Conclusion: Gaming as Intelligence Accelerator

This landmark longitudinal study provides definitive scientific evidence that video gaming increases intelligence in children over time. The research demonstrates that gaming isn’t just correlated with higher intelligence—it actively causes intelligence to grow, with benefits that persist and generalize beyond gaming contexts.

For League of Legends players and parents, this research validates gaming’s cognitive value and challenges outdated assumptions about digital media’s effects on intelligence. The complex strategic, spatial, and decision-making demands of MOBAs provide comprehensive cognitive training that measurably enhances intelligence across multiple domains.

Saiki leverages this scientific understanding to provide meaningful insights into gaming-enhanced intelligence. Your League performance reflects genuine cognitive abilities that have been actively developed and enhanced through gaming experience.

Unlock Your Gaming-Enhanced Intelligence

Ready to discover how gaming has enhanced your cognitive abilities? Saiki analyzes your League of Legends gameplay to reveal:

  • Fluid Intelligence: Your problem-solving ability with novel challenges
  • Processing Speed: How quickly your enhanced brain processes information
  • Strategic Intelligence: Your capacity for complex planning and adaptation
  • Spatial Intelligence: Your enhanced spatial reasoning and map awareness
  • Learning Rate: How effectively your brain acquires new skills and strategies

Start your intelligence assessment and discover the cognitive advantages your gaming has developed. The science is clear—gaming has made you more intelligent. Let’s measure exactly how much.

Your intelligence has been growing with every game. Now it’s time to see the results.

Key Findings

  • Gaming positively impacts intelligence gains over 2-year period
  • Effects remain after controlling for genetics and socioeconomic background
  • Children who played more games showed the most intelligence improvements
  • Benefits equal for both boys and girls across all demographics
Klaus Decaux

Klaus Decaux

Klaus is a software developer from Liège, Belgium, with over a decade of experience in web development and digital content creation.

References

  1. [1] Sauce B, Liebherr M, Judd N, et al. The impact of digital media on children's intelligence while controlling for genetic differences in cognition and socioeconomic background. Sci Rep. 2022;12:7720

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