Many Recent Longitudinal Studies Span Only a Few Months or Years

question 105

Multiple Choice

Many recent longitudinal studies span only a few months or years to avoid problems associated with

• A) cohort effects.
• B) practice effects.
• C) theories and methods becoming outdated.
• D) biased sampling.

---

Definitions:

Aggregate Plan

An approach to operational planning that seeks to balance demand and supply in a way that minimizes costs over a medium-term period, focusing on general output levels.

Aggregate Planning

A process by which a company determines levels of capacity, production, subcontracting, inventory, and stockouts to optimize costs against flexibility.

Downstream Partners

Businesses or entities involved in the later stages of the supply chain, focusing on delivering products to the end consumer.

Upstream Partners

Businesses or individuals who provide goods or services to another company as inputs for that company's production process, typically earlier in the supply chain.