निम्नलिखित मनोवैज्ञानिकों में से किसने अधिगम (सीखने) का 'प्रयास और त्रुटि का सिद्धांत' प्रतिपादित किया था?

The Socio-cultural theory of learning was proposed by:

Which of the following concepts is the opposite of Stimulus Generalisation?

Which of the following approaches is foundational as far as experiential learning in education is concerned?