Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Uncertainty in Measurement: Reading Instruments02:46

Uncertainty in Measurement: Reading Instruments

47.8K
Counting is the type of measurement that is free from uncertainty, provided the number of objects being counted does not change during the process. Such measurements result in exact numbers. By counting the eggs in a carton, for instance, one can determine exactly how many eggs are there in the carton. Similarly, the numbers of defined quantities are also exact. For example, 1 foot is exactly 12 inches, 1 inch is exactly 2.54 centimeters, and 1 gram is exactly 0.001 kilograms. Quantities...
47.8K
Uncertainty in Measurement: Significant Figures03:34

Uncertainty in Measurement: Significant Figures

75.9K
All the digits in a measurement, including the uncertain last digit, are called significant figures or significant digits. Note that zero may be a measured value; for example, if a scale that shows weight to the nearest pound reads “140,” then the 1 (hundreds), 4 (tens), and 0 (ones) are all significant (measured) values.
75.9K
Statistical Analysis: Overview01:11

Statistical Analysis: Overview

8.6K
When we take repeated measurements on the same or replicated samples, we will observe inconsistencies in the magnitude. These inconsistencies are called errors. To categorize and characterize these results and their errors, the researcher can use statistical analysis to determine the quality of the measurements and/or suitability of the methods.
One of the most commonly used statistical quantifiers is the mean, which is the ratio between the sum of the numerical values of all results and the...
8.6K
Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

152
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
152
Serial Position Effect01:03

Serial Position Effect

256
The serial position effect is a cognitive phenomenon where individuals are more likely to recall the first and last items in a list compared to those in the middle. This effect is divided into the primacy effect and the recency effect. The primacy effect is observed when the initial items in a list are remembered better. This occurs because these items are rehearsed more frequently or receive more elaborative processing, allowing them to be encoded into long-term memory more effectively. For...
256
Accuracy, limits, and approximation01:28

Accuracy, limits, and approximation

575
Accuracy, limits, and approximations are common in many fields, especially in engineering calculations. These concepts are imperative for ensuring that a given value is as close as possible to its true value.
Accuracy is defined as the closeness of the measured value to the true or actual value. In engineering mechanics, repeated measurements are taken during theoretical or experimental analyses to ensure that the result is precise and accurate.
The accuracy of any solution is based on the...
575

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Automating Plasmid Construction for High-Throughput Heterologous Expression of Fungal Gene Clusters.

Methods in molecular biology (Clifton, N.J.)·2026
Same author

FALCON: Closed-Loop Multi-Objective Optimization of Lipid Nanoparticles for Cell-Selective mRNA Delivery.

bioRxiv : the preprint server for biology·2026
Same author

Loss of the autoimmune risk gene TREX1 reveals a convergence of mechanisms promoting immune tolerance loss and antitumor immunity.

Science advances·2026
Same author

The Hippo Pathway Is Dysregulated in Cancer-Associated Fibroblasts in Anti-PD-L1-Resistant Cancer.

Cancer research·2026
Same author

How to Select for Angioplasty or Surgical Bypass in People With Diabetes and Peripheral Arterial Disease.

British journal of hospital medicine (London, England : 2005)·2026
Same author

Special days for one group inform children about both mentioned and unmentioned groups.

Journal of experimental child psychology·2026

Related Experiment Video

Updated: Oct 2, 2025

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA
10:58

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

Published on: August 28, 2021

4.6K

Summary accuracy feedback and the left digit effect in number line estimation.

Kelsey Kayton1, Katherine Williams1, Claudia Stenbaek1

  • 1Department of Psychology, Wesleyan University, 207 High Street, Middletown, CT, 06459, USA.

Memory & Cognition
|February 26, 2022
PubMed
Summary

Feedback interventions did not reduce the robust left digit effect in number line estimation tasks. While overall accuracy improved, the systematic bias in estimating numbers based on their leading digit persisted.

Keywords:
FeedbackLeft digit effectNumber line estimationNumerical cognition

More Related Videos

P300-Based Brain-Computer Interface Speller Performance Estimation with Classifier-Based Latency Estimation
06:09

P300-Based Brain-Computer Interface Speller Performance Estimation with Classifier-Based Latency Estimation

Published on: September 8, 2023

686
Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking
05:58

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Published on: August 29, 2018

9.0K

Related Experiment Videos

Last Updated: Oct 2, 2025

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA
10:58

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

Published on: August 28, 2021

4.6K
P300-Based Brain-Computer Interface Speller Performance Estimation with Classifier-Based Latency Estimation
06:09

P300-Based Brain-Computer Interface Speller Performance Estimation with Classifier-Based Latency Estimation

Published on: September 8, 2023

686
Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking
05:58

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Published on: August 29, 2018

9.0K

Area of Science:

  • Cognitive Psychology
  • Numerical Cognition
  • Human Perception

Background:

  • The left digit effect is a robust phenomenon in number line estimation, where estimates are biased by the leading digit (e.g., 299 placed left of 302).
  • This effect suggests a systematic error in how individuals process numerical magnitudes on a line.

Purpose of the Study:

  • To investigate if brief feedback interventions can mitigate or eliminate the left digit effect.
  • To determine the impact of task effort, enhanced by feedback, on numerical estimation biases.

Main Methods:

  • Two experiments utilized a self-paced 0-1,000 number line estimation task.
  • Participants received either summary accuracy or competitive accuracy feedback in a middle block of trials.
  • Exploratory analyses examined trial characteristics and their influence on the left digit effect.

Main Results:

  • Large left digit effects were consistently observed across all blocks and feedback conditions.
  • Feedback interventions did not significantly reduce the left digit effect.
  • Overall estimation accuracy showed improvements with feedback, but the left digit bias remained.

Conclusions:

  • Brief feedback interventions, whether summary or competitive, are ineffective in reducing the left digit effect.
  • The left digit effect appears resistant to effort-based interventions in this number line estimation task.
  • Future research may explore other factors influencing numerical estimation biases.