Pavlov এর তত্ত্বঃ
ইভান পিত্রোভিচ প্যাভলভ (Ivan Petrovich Pavlov, ১৮৪৯ - ১৯৩৬) ছিলেন একাধারে একজন বিখ্যাত রূশ 1 শারীরবিজ্ঞানী (Physiologist) ও মনোবিজ্ঞানী (Phychologist)। সাপেক্ষ প্রতিবর্ত (conditioned reflex) সম্বন্ধে তিনি যুগান্তকারী ব্যাখ্যা দিয়েছেন। কুকুরের দেহে কিভাবে এসব প্রতিবর্ত সৃষ্টি হয় ও কাজ করে তার স্পষ্ট ব্যাখ্যা দেন। ১৯০৪ সালে তিনি শারীরবিজ্ঞান বা চিকিৎসাবিজ্ঞানে নোবেল পুরস্কার পেয়েছেন।
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