Time Series Analysis and Its Applications: With R Examples (Third edition)

Time Series learning

Interrupted Time-Series Design

Which of the following best describes the defining characteristic of a time series in psychological research?

Match each component of a time series design with its correct description in a psychological study context.

A clinical psychologist monitors a patient's self-reported anxiety levels every morning for three months to evaluate the stability of their symptoms during a new treatment. Because these quantitative measurements are taken at sequential intervals over a continuous period, the psychologist is using a(n) ________.

True or False: A psychologist who monitors a patient's self-reported anxiety ($a$) every morning for a year, but then collapses all those data points into a single annual mean ($\bar{x}$) for their final report, is effectively performing a time series analysis.

Stationary Dynamics

FTSE 100 Sequence Data Example

Autoregressive Conditional Probability

Synthetic Sequence Data

In the context of research methods, which of the following best defines a 'time series'?

Match each core component of a time-series design to its corresponding application in a study monitoring how student sleep quality changes throughout an academic year.

A researcher tracks the number of daily calls to a suicide prevention hotline for $90$ consecutive days to see if the frequency of calls increases during the winter holidays. True or False: This research approach is an example of a time series.

A researcher wants to use a time series approach to investigate weekly levels of test anxiety among first-year university students across one full academic semester. Arrange the following steps in the logical order required to correctly design and execute this time series study.

A researcher claims that a new school-wide mindfulness program significantly reduced student stress based on a single measurement taken two weeks after the program began. To evaluate whether this claim is justified or if the low stress levels are merely a temporary fluctuation, a critic would argue that the researcher should have used a(n) ____ to examine data at sequential intervals over a continuous period.

What is the primary purpose of utilizing a time series approach in psychological research?

A researcher monitors a group's average weekly mood ratings for an entire year to evaluate the impact of a new wellness program. Why is this time-series approach more informative than simply comparing one week of ratings before the program to one week after?