Match List-I with List-II and select the correct answer by choosing from the codes given below:

List – I (Authors)		List - II (Concepts)
a.	Burt and Vernon	1.	General and specific
b.	Spearman	2.	Hierarchical theory of Intelligence
c.	Gardner	3.	Triarchic theory of Intelligence
d.	Sternberg	4.	Multiple intelligence

Various psychologists and researchers have contributed significantly to the theories of intelligence by proposing different models and concepts.

Key Points

• Burt and Vernon are known for the hierarchical theory of intelligence, which organizes intelligence into layers with general intelligence at the top and specific abilities below.
• Spearman introduced the concept of general and specific intelligence, famously represented by his "g factor" theory, highlighting a general intelligence underlying all cognitive tasks.
• Gardner proposed the multiple intelligence theory, emphasizing diverse kinds of intelligences like linguistic, musical, and spatial intelligence.
• Sternberg developed the triarchic theory of intelligence, which includes analytical, creative, and practical intelligence as three interrelated components.

Hence, the correct answer is a - 2, b - 1, c - 4, d - 3.