Which Two Effects Are Confounded in Longitudinal Research

question 26

Multiple Choice

Which two effects are confounded in longitudinal research?

• A) age and cohort
• B) age and time-of-measurement
• C) cohort and time-of-measurement
• D) cohort and practice

---

Definitions:

SERCOS Standard

An open standard for data exchange between drives and controls in industrial applications, facilitating real-time communication.

Field Devices

Equipment such as sensors, valves, actuators, and transmitters located in the physical area being monitored or controlled.

Fieldbus Communication System

A network system for industrial control systems used to connect and communicate with field devices like sensors and actuators.

Daisy-Chain Topology

A network configuration where each device is connected in series to the next, forming a linear chain for communication or power distribution.