In the area of psychopharmacology, the development of animal models for cognitive disorders represents a major challenge. At present there is no perfect animal model for measuring learning ability of experimental animals. Furthermore, we do not have any laboratory model for testing spatial memory in particular. The objective of the present invention is to design and fabricate a new instrument, which would help in measuring learning ability and memory capacity of experimental animals. Another objective of the present invention is to provide a laboratory model for testing potential of memory enhancers/memory impairing agents. Yet another objective of the instant invention is to design an instrument, which would be able to measure the learning behaviour of animals based on previous experience. This new instrument would be useful in studying physiology of memory and in exploring mechanism of action of memory enhancers. This model is based on the principle that animals form memory on repeated exposure to Cognition board. Animals when exposed to hollow squares present ,on the Drop board drop in to the Drop bag. This model is capable of testing working memory, long term memory as well as spatial memory. This model has excellent constructive validity.