The central executive plays a role when students are studying for an exam because:

The central executive plays a role when students are studying for an exam because: it is the one that governs the memory systems and is responsible for distributing the attention assigned to each of the tasks to be performed and monitors the attention of the task and its adjustment to the demands of the context.

Explanation:

The Baddeley and Hitch model is considered a multicomponent one, since it consists of a central executive that regulates two systems: the phonological loop and the visuospatial agenda. The central executive is the system of voluntary control and decision-making, being closely related to attention and conscious experience, that is, it is the control system, which is the mental process that allows attention to be distributed and that regulates how much concentration the complex mental system needs to perform a task respecting the demand of the context. Baddeley specifies some functions of the central executive: The coordination in two independent tasks (storage and processing of information), change of tasks, strategies of recovery of the operations; selectively assist specific information and inhibit irrelevant information and lastly, activate and retrieve information from long-term memory.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.