# Sequential Probability Ratio Test (SPRT) and Decision-Making

AppealingAmazonite
·

Start Quiz

Study Flashcards

## 18 Questions

### What is Sequential Probability Ratio Test (SPRT) used for?

Making static or sequential decisions

### What is Signal Detection Theory (SDT)?

A statistical approach to quantify the ability to differentiate between signal (true events) and noise (false alarms).

### What principle is the concept of Integrating Likelihoods Over Time based on?

The principle that multiple independent pieces of evidence can be combined to strengthen the overall decision

### What does the Drift-Diffusion Model suggest about decision making?

The brain accumulates data from a threshold, and a decision is made based on this accumulation.

### What is the role of the Posterior Parietal Cortex in decision-making?

Representing and utilizing prior stimulus information

### What is the key principle behind Sequential Probability Ratio Test (SPRT)?

Accumulating evidence until a threshold is reached to make efficient and quicker decisions

### What are Reward and History Biases in decision-making?

Biases due to past rewards, punishments, or decisions that influence current decision-making.

### How do attractor networks potentially behave in decision-making processes?

Exhibit 'diffusion-to-bound' behavior without computing a drift rate

### Explain the Speed-Accuracy Trade-Off in decision-making.

A phenomenon where increasing speed may decrease accuracy and vice versa.

### How does the concept of Multiple Samples Integration relate to decision-making?

It involves integrating information from multiple samples over time to make a decision.

### How can reward biases be implemented in decision-making processes?

By shifting the psychometric function or the starting point of evidence accumulation

### What is the role of Sequential Probability Ratio Test in decision-making processes?

It is used to determine when to switch from one decision to another based on accumulated evidence.

### What are the four possible outcomes in Signal Detection Theory?

Hits, false alarms, misses, correct rejections

### How can performance limitations be characterized in Signal Detection Theory?

By assessing false alarms and misses

### In what decision-making model is evidence integrated from sensory information over time?

Drift-Diffusion Model (DDM)

### What do firing rates align to in the Drift-Diffusion Model (DDM)?

Eye movement response

### What drives 'diffusion-to-bound' behavior in networks, according to the text?

Emergent dynamics rather than computation of rate

### What influences reward and history biases in decision-making shifts?

Value or probability changes of categories

## Study Notes

### Decision-Making Models and Theories

• Sequential Probability Ratio Test (SPRT) is a mathematical method used to make decisions based on sequential observations.
• Signal Detection Theory (SDT) is a theoretical framework that explores how people make decisions under uncertainty, considering both true and false alarms.
• The concept of Integrating Likelihoods Over Time is based on the principle of combining evidence from multiple observations to make a decision.

### Decision-Making Mechanisms

• The Drift-Diffusion Model suggests that decision-making is a gradual process, where evidence accumulates over time until a threshold is reached, leading to a decision.
• The Posterior Parietal Cortex plays a key role in decision-making, particularly in tasks that require the integration of sensory information.

### Biases and Limitations

• Reward and History Biases are types of biases that influence decision-making by prioritizing past rewards and experiences.
• Attractor networks can exhibit oscillatory behavior in decision-making processes.
• The Speed-Accuracy Trade-Off suggests that faster decisions may come at the cost of accuracy.
• The concept of Multiple Samples Integration relates to decision-making, where evidence is integrated over time to make a decision.

### Signal Detection Theory

• The four possible outcomes in Signal Detection Theory are Hits, Misses, False Alarms, and Correct Rejections.
• Performance limitations in Signal Detection Theory can be characterized by the receiver operating characteristic (ROC) curve.

### Drift-Diffusion Model

• In the Drift-Diffusion Model, firing rates align with the decision variable, which accumulates evidence over time.
• The 'diffusion-to-bound' behavior in networks is driven by the integration of sensory evidence.

### Reward and History Biases

• Reward and history biases in decision-making shifts can be influenced by the integration of past rewards and experiences into the decision-making process.

Learn about how evidence accumulates and influences decision-making using the Sequential Probability Ratio Test (SPRT). Explore the concept of integrating likelihoods over time to strengthen decisions based on multiple independent pieces of evidence.

## Make Your Own Quizzes and Flashcards

Convert your notes into interactive study material.

## More Quizzes Like This

Use Quizgecko on...
Browser
Information:
Success:
Error: