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The foundational and wildly popular go-to resource for influence and persuasion—a renowned international bestseller, with over 5 million copies sold—now revised adding: new research, new insights, new examples, and online applications. In the new edition of this highly acclaimed New York Times bestseller, Robert Cialdini—the seminal expert in the fields of influence and persuasion—explains the psychology of why people say yes and how to apply these insights ethically in business and everyday settings. Using memorable stories and relatable examples, Robert Cialdini makes this crucially important subject surprisingly easy. With Cialdini as a guide, you don’t have to be a scientist to learn how to use this science. You’ll learn Cialdini’s Universal Principles of Influence, including new research and new uses so you can become an even more skilled persuader—and just as importantly, you’ll learn how to defend yourself against unethical influence attempts. You may think you know these principles, but without understanding their intricacies, you may be ceding their power to someone else. Cialdini’s Principles of Persuasion: * Reciprocation * Commitment and Consistency * Social Proof * Liking * Authority * Scarcity * Unity, the newest principle for this edition Understanding and applying the principles ethically is cost-free and deceptively easy. Backed by Dr. Cialdini’s 35 years of evidence-based, peer-reviewed scientific research—including a three-year field study on what leads people to change—Influence is a comprehensive guide to using these principles to move others in your direction.

- This device is locked to T-Mobile only and not compatible with any other carrier. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charger and charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

- This device is locked to AT&T only and not compatible with any other carrier. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charger and charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.). - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

Color: Gold

- This device is locked to AT&T only and not compatible with any other carrier. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charger and charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.). - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

Color: Midnight Green

- This device is locked to Verizon only and not compatible with any other carrier. - Please check with your carrier to verify compatibility. - When you receive the phone, insert a SIM card from a compatible carrier. Then, turn it on, connect to Wi-Fi, and follow the on screen prompts to activate service. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%.

Size: 64GB    Color: Blue    Service Provider: Verizon    Product grade: Renewed

- This device is locked to AT&T only and not compatible with any other carrier. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charger and charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

- This device is locked to T-Mobile only and not compatible with any other carrier. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%. - Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charger and charging cable. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm's length.

- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.). - Please check with your carrier to verify compatibility. - When you receive the phone, insert a SIM card from a compatible carrier. Then, turn it on, connect to Wi-Fi, and follow the on screen prompts to activate service. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charging cable. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%.

Size: 256GB    Color: Blue    Service Provider: unlocked    Product grade: Renewed

- This device is locked to T-Mobile only and not compatible with any other carrier. - Please check with your carrier to verify compatibility. - When you receive the phone, insert a SIM card from a compatible carrier. Then, turn it on, connect to Wi-Fi, and follow the on screen prompts to activate service. - The device does not come with headphones or a SIM card. It does include a generic (Mfi certified) charger and charging cable. - Tested for battery health and guaranteed to have a minimum battery capacity of 80%.

Size: 64GB    Color: Red    Service Provider: T-Mobile    Product grade: Renewed

- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.). - Tested for battery health and guaranteed to come with a battery that exceeds 90% of original capacity. - Backed by a one-year satisfaction guarantee, with free access to Amazon’s Technical Support team throughout the full year and ability to replace or return the product if it does not work as expected. - Includes a brand new, generic charging cable that is certified Mfi (Made for iPhone) and a brand new, generic wall plug that is UL certified for performance and safety. Also includes a SIM tray removal tool but does not come with headphones or a SIM card. - Inspected and guaranteed to have minimal cosmetic damage, which is not noticeable when the device is held at arm’s length. Successfully passed a full diagnostic test which ensures like-new functionality and removal of any prior-user personal information.