MEET AGATE AT DIGITIAL DRAGONS 2024

We’re thrilled to announce that Agate representatives will be attending this year’s Digital Dragons from May 19th to 21st, 2024, in Kraków, Poland. Established in 2012, the Digital Dragons stands as one of Europe’s premier B2B events within the global game industry. Organized by Krakow Technology Park, it has various agendas, from conferences, awards, to networking among game producers, venture capital firms, and media. As for the awards, the accolades cover a diverse spectrum of games, spanning from AAA blockbusters to independent and mobile titles. Although its primary emphasis is on recognizing Polish developers, an international developer receives commendation each year. Meet our representatives who will attend the Digital Dragons 2024: Cipto Adiguno, Agate’s Chief Strategy Officer and the President of the Indonesia Game Association (AGI) will be available to discuss with you at the event. He’s responsible for making strategic partnerships for Agate. Moreover, his passion for game development led him to contribute to the recent Presidential Regulation (Perpres) Number 19 of 2024 on the Acceleration of National Game Industry Development. Curious about this regulation? You can discuss it with Cipto. At Digital Dragons, we will also showcase Agate’s capabilities as a game development partner for your future projects, and we’ll bring along our teams from porting and art services to demonstrate our comprehensive expertise and support for your gaming endeavors. Head Division of Porting Services, Geofary Arka, will collaborate with you to bring your game to various platforms, from PC to consoles, consoles to mobile, or vice versa. Porting games comes with its own set of challenges, and Arka will help you understand the challenges and how Agate can achieve optimal results by overcoming them. Discuss with Arka to find out the most suitable steps for porting your game in the future. Meanwhile, our Head Division of Art Services or recently known as Vertx Break powered by Agate, Ar Cahyadi Indra (Adi), will be present to introduce you to the impressive results that our art services team can deliver. Vertx Break powered by Agate is focused on producing 3D Stylized Art, providing services for 3D Character, 3D Equipment & Outfit, 3D Environment Props, and 3D Hard Surface. Adi has a deep understanding of art creation that can enhance the gaming experience for players in your game. Raissa Alexandra, our Business Development Manager, has vast experience in spotting collaboration opportunities that perfectly match your requirements. One of these opportunities involves enhancing your game’s appeal through game art. Raissa will delve deeper into how Agate’s game art services, including expertise in 3D stylized art, can elevate your gaming experience, providing captivating visuals that resonate with players on various platforms. Ardita Silvadha Erlangga, our Business Development Manager, knows how to find the best chances for teaming up that fit what you need. One cool chance is to make your game available on more consoles through porting. Ardita will explain more about how Agate’s porting services can make your game awesome on any console. All of our representatives will engage in discussions with you to find the most suitable solutions for your development needs. Discover more about Agate by scheduling a meeting in advance with us. We look forward to meeting you at the Digital Dragons 2024.
MEET AGATE AT REBOOT DEVELOP BLUE DUBROVNIK 2024

Agate eagerly will attend Reboot Develop Blue 2024 on April 22-24, 2024, in Dubrovnik, Croatia. Reboot Develop Blue is an event crafted to cater to the changing needs of the gaming industry and game developers. The upcoming ninth edition aims to grow even larger and reach new heights, cementing its reputation as one of Europe’s most unique and prestigious gatherings for the gaming community. The event will showcase over 155 speakers across 8 stages over the course of 3 days. There will be a substantial B2B expo and indie expo areas within the conference venue. Agate’s presence at the event signifies our dedication to collaborate and contribute more significantly to the global game development market. Meet our representative, Ardita Silvadha Erlangga, who currently serves as the Business Development Manager at Agate. Ardita has extensive experience in identifying collaboration opportunities that best suit your needs. One of them is the opportunity to expand your game’s reach through porting. Ardita will delve deeper into how Agate’s porting services can help you create an unforgettable gaming experience on any console. Learn more about Agate with our representative at Reboot Develop Blue 2024. Feel free to contact us to schedule a meeting in advance. We look forward to meeting you!
MEET AGATE AT THE GAME DEVELOPER CONFERENCE 2024

Agate is thrilled to attend the Game Developer Conference (GDC) 2024, held from March 18 to 22 in Moscone Center, San Fransisco, California. GDC is the annual game industry’s premier professional event, celebrating game developers and the ever-evolving art of game creation. The conference promises exciting activities, featuring an expo, networking opportunities, and prestigious award ceremonies like the Independent Games Festival. Attendees can also participate in various tutorials, lectures, and roundtables by industry professionals on game-related topics covering programming, design, audio, production, business and management, and visual arts. Agate’s presence at GDC 2024 signifies our dedication to fostering collaboration and becoming the industry’s leading global game development partner. Let’s Meet our representative at the GDC 2024 Meet Shieny Aprilia, Agate’s esteemed Chief Executive Officer (CEO), whose visionary leadership propels our company forward in the dynamic world of gaming. With extensive experience and a deep understanding of the industry, she guides Agate’s strategic direction and fosters a culture of excellence and innovation. As CEO, she oversees all aspects of Agate’s operations, ensuring that we remain at the forefront of the gaming landscape. Under her guidance, Agate continues to thrive, shaping the future of gaming with passion, creativity, and determination. You can also meet Cipto Adiguno, our Chief of Strategy Officer; the President of Indonesia Game Association (AGI); he nurtures the local gaming industry, channeling his passion through the lens of game development. He is responsible for identifying and building strategic partnerships and expanding Agate’ market presence. As the bustling halls of Gamescom buzzed with excitement, we aimed to not only showcase its cutting-edge creations but also to forge lasting connections that would shape the future of the gaming landscape under his strategic guidance. Raissa represents the Art and Full Development services team, who provides end-to-end game development. This encompasses a streamlined workflow, a proficient team offering robust support, and flexibility across diverse art styles and software stacks. Let’s meet with Raissa to discuss how we can assist you with game-ready 3D art to enhance the visual appeal of your game. Explore Agate’s services by meeting our team at this event. Don’t hesitate to contact us via email to set up a meeting in advance. We’re looking forward to having a conversation with you!
MEET AGATE AT Hamburg Games Conference 2024

We’re thrilled to announce our participation in the Hamburg Games Conference, set for March 5-6 at the Altonaer Museum in Hamburg, Germany. The Hamburg Games Conference, hosted by Gamecity Hamburg, GRAEF Rechtsanwälte, and Super Crowd Entertainment, has been a prominent event for 14 years. Focused on C-Level Business and Investment, the conference presents a two-day onsite event and is set to be one of the pivotal B2B gatherings for the European gaming industry. The conference centers on discussions about the gaming industry’s evolution and the business landscape. Key topics include exploring the gaming market’s potential, tackling financing challenges for studios, and implementing successful strategies for scaling business models. Meet Agate’s representative at the Hamburg Games Conference 2024 Ardita is the esteemed representative of our porting team at the Hamburg Games Conference. With a genuine passion for enhancing player experiences and advocating for technological advancements, Ardita collaborates closely with her team to support clients in managing tools and platforms for exceptional player support. Don’t hesitate to connect with Ardita during the event to discuss IP development, including porting services and strategies for seamless game transitions across platforms. Feel free to reach out via email to schedule a meeting and discover how Agate can provide valuable assistance. We eagerly anticipate the opportunity to meet you at the conference!
MEET AGATE AT TAIPEI GAME SHOW 2024

We begin our adventure this year by attending the Taipei Game Show, held from January 25th to 26th at the Taipei Nangang Exhibition Center Hall 1, Taipei, Taiwan, Province of China. The Taipei Computer Association has organized the Taipei Game Show annually since 2003 to provide a platform for domestic and foreign game developers and publishers to showcase their work and offer the best gaming experience to the attendees. The B2B Zone of the event offers business matchmaking services to vendors and game developers where they can exchange ideas and explore business opportunities. Meet Agate’s representative at the Taipei Game Show 2024: Vincentius is Agate’s Head of Business Development. He’s a dedicated professional who invests time in understanding clients, identifying their pain points, and recognizing opportunities that can transform a good partnership into a fantastic collaboration. He plays an essential role in influencing business development, sales strategies, and the company’s global expansion. Connect with him to explore tailored development solutions, Agate’s impressive track record, and how our team’s proficiency aligns with your visions. Explore Agate’s services by meeting our team at this exciting event. Don’t hesitate to contact us via email to set up a meeting. We’re looking forward to having a conversation with you!
Agate’s Seasonal Pause: Recharging for a Bright New Year

As the year draws to a close, Agate announces a brief respite and takes some time to look back at everything we have done in the past twelve months. This pause isn’t just a moment of rest but a strategic intermission—a deliberate step towards rejuvenation and cultivating fresh inspiration for the forthcoming year. We are very grateful for everyone who engaged with our journey throughout the past year — dear partners, players, and friends. This year we’ve embarked on a transformative journey, unveiling a bold new business direction in February. Agate aspires to evolve into a global game development partner and focus on creating larger scale games (A to AAA) while contributing to a better game ecosystem in Indonesia. By adopting this strategy, Agate reinforces its worldwide industry presence. With a dedicated team of 250+ experienced professionals, Agate seeks to deliver top-notch services in the international game development landscape. Forging Global Presence 2023 was a year for Agate to look at how we forge a global presence. As part of our commitment, Agate participated in more than >30 industry events across the globe, effectively connecting and sharing insights on our expertise in Full SKU, Game Art, Game Porting, as well as Gamification. With our primary office situated in Bandung, Indonesia, we are helped by our international representatives in different countries such as Canada, Germany, and South Korea to support amplify our global presence. Aspiring Top Global Partner: A Thought Leader from Indonesia Among the abovementioned event participations, some events become the highlights that resonate with the success and progress of Agate throughout this year. Gamescom Asia 2023 Besides our team participating as attendees, our Chief Strategy Officer, Cipto Adiguno, participated as a panelist in the Gamescom Asia 2023’s discussion on “Building a Thriving SEA Gaming Ecosystem Together.” Indonesia Game Developer Exchange (IGDX) 2023 In the annual event organized by the Ministry of Communication and Informatics in collaboration with the Indonesian Game Association (AGI)—Indonesia Game Developer Exchange (IGDX) Business and Conference 2023—our Chief People Officer, Aditia Dwiperdana, is one of the speakers at the conference discussing the topic: “The Importance of Team Culture in Game Studios: The Secret Behind Successful Studio.” In partnership with Epic Games, Agate held a networking event that served as a vibrant platform for fostering connections and camaraderie among Indonesian game companies and its ecosystem. The joyous atmosphere was enhanced by the presence of >70 gaming companies. Indonesia-Europe Business Forum (IEBF) 2023 Organized by the Ministry of Foreign Affairs of Indonesia, our Chief Executive Officer, Shieny Aprilia, represented us at the Indonesia-Europe Business Forum (IEBF) 2023 and shared insights about the Indonesian gaming industry, as well as our journey as a global partner, particularly for European companies. Tech in Asia Conference 2023 Our sub-brand in gamification service, Level Up powered by Agate, opened an interactive booth with VR experience and hosted a press conference in Tech in Asia Conference. The press conference was focusing on the gamification trends anticipated for 2024 and introduced the Level Up Gamification Framework. Welcoming New Partners, New Adventures Agate collaborated with Sekuya, a leading gaming social world company, to transform the gaming industry through metaverse adoption. This collaboration leverages Agate’s game development, game art, porting, and blockchain technology as well as Sekuya’s gaming social world vision to create a seamless and immersive gaming experience for players worldwide. Agate and ISKRA, a single-destination platform designed for streamlined entry into Web3 gaming with participant rewards, uniting their strengths for a shared purpose. The collaboration is set to bring forth ‘Atma: Battle of Souls’, an exclusive game on ISKRA’s platform. This past year we also celebrated the highly anticipated global launch of a sequel to one of Agate’s internal IP games, Valthirian Arc: Hero School Story 2 across all consoles, and kicked off the new IP project codenamed Project Dead with PQube. This collaboration is built on the foundation of trust established during previous ventures, where Agate successfully crafted games with global recognition. This year, Agate joined as a Global Growth Development Partner of ZEPETO (Naver Z), a 3D avatar creation app and virtual world platform. Agate’s role in this partnership centers on contributing to the enrichment of ZEPETO’s “World” contents. ifland is SK Telecom’s metaverse service that offers a range of features for social networking and is growing into a globally accessible service fueled by cooperation with various partners. Throughout this year, Agate and ifland are actively exploring potential opportunities to establish an optimal form of collaboration. Crafting Meaningful Play We’re committed to delivering excellence as we engage in multiple projects and leverage our top-tier services. Health Heroes: Nutrihunt In January, our sub-brand in gamification service, Level Up powered by Agate, collaborated with the Global Alliance for Improved Nutrition and released a scan application to get nutritional info from barcodes on food or beverage product packaging called Health Heroes: Nutrihunt. Genom Heroes Genom Heroes is a form of collaboration between our sub-brand in gamification service, Level Up powered by Agate, with Philia IT Solution. It is an ambitious human genome project aiming to position Qatar among the pioneering countries in the implementation of precision medicine by utilizing knowledge about genes. Eizper Chain PVP Our Full SKU team developed a mobile game called Eizper Chain PVP. It is a multiplayer 3 vs 3 action-packed arena where players battle it out to be the winner by collecting points. Graycraft Supporting Gray’s strategic initiative to develop an original game using their NFTs, we created Graycraft, a fast-paced 2D multiplayer mecha battle browser game. Live Ops Services: Shellfire Collaborated with a state-owned information and communications technology enterprise and telecommunications network in Indonesia, our Full SKU team delivered a Live Ops Services named Shellfire in March. Memories We released the highly anticipated sequel, Celestia – Chain of Fate Season 2 (Part 1), as the latest addition to our visual novel mobile game. Saakuru Released in May, Project EOS is a collaboration between Agate and Saakuru to create Saakuru Metaverse. We build Project EOS as a multiplayer experience that
MEET AGATE AT GAME DEVELOPERS SESSION PRAGUE 2023

We’re closing our adventure this year by attending in Game Developers Session, held from December 8 to 9 at The Prague Congress Centre, Prague, Czech Republic. As the oldest Central European conference devoted to games development, game technologies, business, and marketing, the Game Developers Session holds a special place. We are thrilled about being involved in this event. Meet Agate’s Representative in the Game Developers Session Prague 2023 Ardita represents our porting team. She is driven by an earnest desire to contribute to exceptional player experiences, advocating technological advancements that prioritize the intellectual property that businesses can own. She works closely with her expert team to help our clients implement and manage their tools, platforms, and people to deliver excellent player support. Get in touch with Ardita at the event to discuss IP development, including porting services and strategies to bring games from one platform to another, as well as maintaining relationships with major platform holders. Explore Agate’s services by meeting our team at this exciting event. Don’t hesitate to contact us via email to set up a meeting. We’re looking forward to having a conversation with you!
Meet Agate at G-Star 2023

Agate is thrilled to attend the G-STAR, held from November 16 to November 19 in Busan, South Korea. As one of South Korea’s premier gaming industry events, G-STAR showcases the latest video games created by both local and international developers, as well as a platform for the unveiling of new gaming hardware and technology. With its broad appeal, the event captivates the interest of gamers and developers alike, offering a prime opportunity for networking and collaboration. Meet Agate’s Representatives at booth J-309 in the G-STAR 2023: Vincentius is Agate’s Head of Business Development. He’s a dedicated professional who invests time in understanding clients, identifying their pain points, and recognizing opportunities that can transform a good partnership into a fantastic collaboration. He plays an essential role in influencing business development, sales strategies, and the company’s global expansion. Connect with him to explore tailored development solutions, Agate’s impressive track record, and how our team’s proficiency aligns with your visions. As a Full SKU Division Head at Agate, Marvin provides strategic leadership in creating, developing, and managing gaming products. This role involves managing the entire product lifecycle, from concept to launch, which requires a deep understanding of the gaming industry, market trends, and consumer preferences. He will collaborate with cross-functional teams to drive innovation and ensure product quality. During the event, Marvin will be available to discuss our services and approach to game development, including strategies for creating engaging gameplay and storytelling. Andreas is Agate’s Business Development Manager of the full game development services team. With more than a decade of industry experience and a proven track record of fostering strategic partnerships, he deeply understands the game industry landscape. Connect with him to explore tailored development solutions, Agate’s impressive track record, and how our team’s proficiency aligns with your visions. As Agate’s Lead Marketing Manager, Andhika always seeks ways to elevate Agate’s brand presence and reach through innovative marketing strategies. With a passion for creativity and a keen eye for market trends, Andhika consistently seeks out new and effective avenues to showcase Agate’s products and services to the world. Explore Agate’s services by meeting our team at this exciting event. Don’t hesitate to contact us via email to set up a meeting. We’re looking forward to having a conversation with you! Aaliyah is Agate’s Business Development Manager and our representative in South Korea. With her expertise in business development and partnerships, Aaliyah is adept at crafting and implementing innovative business strategies that meet and exceed market expectations. Her exceptional communication skills and results-driven approach make her an invaluable asset in promoting Agate’s mission and vision.
MEET AGATE AT PARIS GAMES WEEK, GAME CONNECTION EUROPE, AND MONTREAL INTERNATIONAL GAME SUMMIT

Agate is actively broadening its international network, and we’re excited to announce our involvement in these upcoming global events as we strive to strengthen our global presence and explore new collaborative ventures. Paris Games Week, from 1-5 November Game Connection Europe, from 2-3 November Montreal International Game Summit, from 8-9 November Paris Games Week Paris Games Week (PGW) 2023 is one of the most anticipated video game events in Europe. The event will be held from November 1st to 5th at the Paris Expo Porte de Versailles in Paris, France. The event will feature various activities, including game demos, conferences, panels, tournaments, and meet-and-greets with game developers. Meet Agate’s Representatives at the Paris Games Week 2023: Andreas is Agate’s Business Development Manager of the full game development services team.With more than a decade of industry experience and a proven track record of fostering strategic partnerships, he has a deep understanding of the game industry landscape. Connect with him to explore tailored development solutions, Agate’s impressive track record, and how our team’s proficiency aligns with your visions. Ardita represents the porting and IP publishing team. She is driven by an earnest desire to contribute to exceptional player experiences, advocating technological advancements that prioritize the intellectual property that businesses can own. She works closely with her expert team to help our clients implement and manage their tools, platforms, and people to deliver excellent player support. Get in touch with Ardita at the event to discuss various topics such as: Porting services and strategies to bring games from one platform to another, as well as maintaining relationships with major platform holders Work together on our existing IPs, especially our PC and console games, such as Celestia Chains of Fate, Dreadhaunt, and Tirta. Games Connection Europe 2023 Agate becomes one of the sponsors at the Game Connection Europe, held from November 2nd to 3rd, at the Porte de Versailles, Paris, France. In this event, you can visit us in booth #62B and discover exciting opportunities to collaborate with one of the most experienced game developers in Southeast Asia. Meet Agate’s Representatives at the Games Connection Europe 2023: Andreas is Agate’s Business Development Manager of the full game development services team. With more than a decade of industry experience and a proven track record of fostering strategic partnerships, he has a deep understanding of the game industry landscape. Connect with him to explore tailored development solutions, Agate’s impressive track record, and how our team’s proficiency aligns with your visions. Ardita represents the porting and IP publishing team. She is driven by an earnest desire to contribute to exceptional player experiences, advocating technological advancements that prioritize the intellectual property that businesses can own. She works closely with her expert team to help our clients implement and manage their tools, platforms, and people to deliver excellent player support. Get in touch with Ardita at the event to discuss various topics such as: Porting services and strategies to bring games from one platform to another, as well as maintaining relationships with major platform holders Work together on our existing IPs, especially our PC and console games, such as Celestia Chains of Fate, Dreadhaunt, and Tirta. Montreal International Game Summit Montreal International Game Summit (MIGS) 2023 is a B2B event to further develop Canada’s video game industry through global networking opportunities, world-class speakers, and a B2B exhibit space. As one of the participants, we are excited to showcase our services and collaborate to create the games of tomorrow. Meet Agate’s Representative at the Montreal International Game Summit 2023: Vincentius is Agate’s Head of Business Development. He’s a dedicated professional who invests time in understanding clients, identifying their pain points, and recognizing opportunities that can transform a good partnership into a fantastic collaboration. He plays an essential role in directing Agate’s strategic evolution, influencing business development, sales strategies, and the company’s global expansion. Connect with him to explore tailored development solutions, Agate’s impressive track record, and how our team’s proficiency aligns with your visions. Explore Agate’s services by meeting our team at these exciting events. Don’t hesitate to contact us via email to set up a meeting. We’re looking forward to having a conversation with you!
Level Up powered by Agate Shares Strategies to Improve Business Performance Through Gamification Adoption

Jakarta, 19 October 2023 – Agate International (“Agate”) through its sub-brand, Level Up powered by Agate, today announced a gamification trend that companies can use to improve business performance. Gamification will make deeper inroads in industries such as education, healthcare, financial services, eCommerce (retail and wholesale), automotive, and telecommunications. The gamification market is projected to grow from USD 9.1 billion in 2020 to USD 30.7 billion in 2025, with a Compound Annual Growth Rate of 27.4%.1Co-founder and Chief Executive Officer Agate Shieny Aprilia said, “In an increasingly connected business world, the decision to adopt gamification is no longer a choice, but a necessity. Gamification is more than just entertainment; it is the key to optimizing market interactions, strengthening brands, and increasing workplace productivity. We also encourage business leaders to rethink their business strategy by adapting to the growing trend.”Some of the gamification trends that will grow further in 2024 are as follows: Growth of In-App GamificationGaming elements in non-gaming apps encourage the user’s brain to release dopamine. As a result, users want to interact with gamified apps longer to earn more achievements and enjoy the feeling of accomplishment. Use of AI to Personalize the Gamification Experience:Artificial Intelligence (AI) in gamification personalizes the experience through analyzing user data, adapting gameplay in real-time, providing intelligent feedback, generating customized content, offering deep data analysis, and automating management processes, improving engagement and learning outcomes. Usage can be avatar-based gamified Chatbot for marketing and Data-Driven Gamification Corporate Learning Platform. Virtual Events:Gamification in corporate events is one of the most exciting trends as it can incorporate live music to interactive real-time games. Gamification in Employee Growth: Gamification in learning management systems improves student performance by 34.75%, with challenge-based approaches improving results by 89.45%.2 Gamification increases retention by 90% by actively engaging students. Studies show significant improvements in retention periods (50%) and test scores (40%) with social gamification in online education.3 Digital games increase brain efficiency and improve visuospatial skills as well as attention. Other studies have also shown that gaming can improve cognitive skills, memory, and impulse control. Head of Level Up powered by Agate Junialdi Dwijaputra said, “Level Up powered by Agate has developed a complete solution starting from ‘turn-key’ and ‘custom-gamification’ to help businesses adopt gamification easily. With our experience collaborating with companies in various industry sectors, we create approaches and frameworks so that gamification will be implemented according to business needs.” In an era where digital innovation is increasingly influencing businesses, Agate introduces the Level Up Gamification Framework, an innovative model that integrates academic theory and practical implementation. The framework is designed to help companies harness the full potential of gamification in brand development and human capital strategy growth. Level Up Gamification Framework is the result of observing the gaps in existing gamification frameworks. Most existing frameworks lack the technical requirements necessary to support business needs. In contrast, our framework has been designed to fill this gap thus providing a comprehensive and complete solution that can fulfill diverse business needs. “The framework we have designed is the result of our extensive research to develop a gamification framework that is not only effective but can also be easily adopted by businesses. We understand that every company has different needs, and that is why we are committed to creating solutions that are flexible and customizable. With a focus on both academics and practical applications, our framework is a tool designed to help businesses maximize the potential of gamification in a precise, efficient, and effective way,” continued Junialdi Dwijaputra. Meanwhile, Chief Executive Officer DEUS Gregory Kurnia said, “As an Agate client who has adopted gamification for my business, we have seen significant improvements in customer engagement, employee productivity, and overall business results. Gamification is not just a trend; it is a solution that delivers real positive impact.” About Agate Agate is Indonesia’s most prominent technology and game developer company, providing game development, game art, and game porting services to a wide range of clients since 2009. With a vision of becoming an internationally renowned game developer, the company leverages over a decade of experience in the gaming industry. Currently, Agate boasts a strong track record, having served 200++ clients across various countries, developed 50++ games, and received 20++ awards both locally and globally, which strengthens its position as a formidable player in the global gaming market. For more information, please visit https://agate.id/About Level Up powered by Agate 1https://www.marketsandmarkets.com/Market-Reports/gamification-market-991.html#:~:text=The%20gamification%20market%20size%20is,27.4%25%20during%20the%20forecast%20period.2https://spinify.com/blog/how-gamification-is-different-from-traditional-learning/ 3https://www.researchgate.net/publication/274697615_A_Playful_Game_Changer_Fostering_Student_Retention_in_Online_Education_with_Social_Gamification 4 https://www.nih.gov/news-events/news-releases/video-gaming-may-be-associated-better-cognitive-performance-childre