David McClelland
Psychologist, established need theory
Psychologist, established need theory
1917
109 years ago
Thinkers & Philosophers
United States
Contributed significantly to the field of psychology with the development of the need for achievement theory. Focused on how individual differences in motivation affect performance. Served as a professor at Harvard University, influencing the study of personality and motivation. Authored several influential books and articles, advancing the understanding of human behavior and motivation in various contexts, including education and the workplace.
Developed the need for achievement theory
Authored 'The Achieving Society'
Pioneered the concept of motivational needs
Served as Prince of Transylvania during the late 16th and early 17th centuries. Ascended to the throne in 1593 and was involved in various military campaigns against the Ottoman Empire. His leadership was marked by efforts to maintain Transylvanian autonomy amidst external pressures from neighboring powers. Báthory's rule faced challenges from both within and outside the principality, leading to eventual deposition due to political intrigue and military failures. Following his removal, he spent time in exile.
Continue ReadingHeld the position of the 12th Secretary of Defense from 1973 to 1975, overseeing the U.S. military during the Vietnam War's end and the transition of military policies. Served as Director of Central Intelligence, contributing to national security strategies. Worked in various economic and political roles within government, influencing defense policy and energy strategies. Played a significant role in shaping U.S. defense and intelligence during the Cold War.
Continue ReadingBorn in the Netherlands in 1927, this individual served as a captain for KLM Royal Dutch Airlines. He piloted various aircraft, gaining extensive experience in the aviation field. The most notable event in his career was leading Flight 4805, which tragically ended in a collision at Tenerife Airport in 1977, resulting in the deadliest airline accident in history. This incident greatly influenced aviation safety regulations and cockpit communication practices.
Continue ReadingActive in the 18th century, this painter specialized in large-scale frescoes and became one of the leading figures of the Rococo style. Tiepolo's oeuvre includes notable works in churches and palaces across Europe, showing an exceptional ability to convey movement and light. His significant projects involved working in Venice, Bavaria, and Würzburg. The artist collaborated with his sons, helping to establish a family dynasty in painting. Through meticulous planning and a signature color palette, Tiepolo's compositions combined grand themes with vibrant depictions, creating a distinctive style that resonated across ages.
Continue ReadingRuled as King of Scotland from 1567 and became King of England and Ireland in 1603, uniting the crowns. Oversaw the translation of the Bible into English, resulting in the King James Version, published in 1611. His reign included the establishment of the United Kingdom, which blended the governance of England and Scotland. Additionally, faced political challenges such as the Gunpowder Plot in 1605, an attempt to assassinate him and blow up the House of Lords. Promoted the arts and scholarship, reflecting the Renaissance influences of his time.
Continue ReadingA prominent Egyptian general and politician, served as Prime Minister of Egypt during a critical period of the nation's history. Held key military positions and played a crucial role in shaping defense policies. His tenure was marked by efforts to modernize the armed forces and address national security challenges. Transitioned from military to political leadership, impacting Egypt's governance structure while navigating complex regional dynamics. After leaving the office of Prime Minister, continued to participate in political discourse until death in 1993.
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