On December 16, 2025, the preliminary defense of the dissertation entitled "Experimental Study of Cognitive Features of English Humor" was held. The dissertation was prepared by Ilham Aghabilal oglu Taghiyev, doctoral candidate in specialty 5708.01 – "Germanic Languages" at the Graduate School of Science, Art and Technology and the Department of English Language and Literature of Khazar University, within the framework of the Doctor of Philosophy program.