Related Experiment Video
Updated: Apr 6, 2026
06:07
Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
Published on: May 15, 2019
9.2K
Evidence against continuous variables driving numerical discrimination in infancy.
Ariel Starr1, Elizabeth M Brannon2
1Department of Psychology and Neuroscience, Duke University, Durham, NC USA ; Center for Cognitive Neuroscience, Duke University, Durham, NC USA.
Frontiers in Psychology
|July 21, 2015
Summary
Infants show sensitivity to number changes. New research indicates infants are not more sensitive to contour length than to numerosity, challenging previous theories on early numerical discrimination.
Area of Science:
- Cognitive Development
- Infant Perception
- Numerical Cognition
Background:
- Infants demonstrate sensitivity to numerical changes.
- A prevailing theory suggests infants prioritize continuous properties (e.g., surface area, contour length) over numerosity.
- Limited research has directly investigated infants' sensitivity to contour length.
Purpose of the Study:
- To assess 7-month-old infants' acuity for cumulative contour length.
- To compare infants' sensitivity to contour length with their sensitivity to numerosity.
- To challenge the hypothesis that contour length drives numerical discrimination in infancy.
Main Methods:
- Utilized a change detection paradigm.
- Kept surface area and number of items constant while manipulating cumulative contour length.
- Tested infants' ability to detect changes in contour length.
Main Results:
- Seven-month-old infants detected a threefold change in cumulative contour length.
- Infants failed to detect a twofold change in cumulative contour length.
- Results suggest contour length sensitivity is comparable to numerosity sensitivity in infants.
Conclusions:
- Infants' sensitivity to contour length is not superior to their sensitivity to numerosity.
- Findings challenge the notion that contour length is a primary factor in infant numerical discrimination.
- Supports a more nuanced understanding of early numerical cognition development.
Keywords:
analog magnitudescontour discriminationnumerical cognitionquantity representationsize discriminationMore Related Videos
05:35Experience is Instrumental in Tuning a Link Between Language and Cognition: Evidence from 6- to 7- Month-Old Infants' Object Categorization
Published on: April 19, 2017
7.2K
07:31Defining the Role Of Language in Infants' Object Categorization with Eye-tracking Paradigms
Published on: February 8, 2019
7.4K
Related Concept Videos
01:21The Nativist Approach
586
The nativist approach to infant cognitive development proposes that infants are born with inherent knowledge structures that allow them to interpret the world almost immediately. This perspective contrasts with earlier developmental theories, such as those proposed by Jean Piaget, which emphasized a more gradual acquisition of cognitive abilities through interaction with the environment. One key concept in this approach is object permanence — the understanding that objects continue to...
586
02:55Stereotypes, Prejudice, and Discrimination
96.0K
Humans are very diverse and although we share many similarities, we also have many differences. The social groups we belong to help form our identities (Tajfel, 1974). These differences may be difficult for some people to reconcile, which may lead to prejudice toward people who are different. Prejudice is a negative attitude and feeling toward an individual based solely on one’s membership in a particular social group (Allport, 1954; Brown, 2010). Prejudice is common against people who...
96.0K
01:26Causes of Similarity-Dissimilarity Effect
347
The similarity-dissimilarity effect, a fundamental concept in social psychology, explains how interpersonal similarities and differences influence attraction and social interactions. This effect is supported by three key psychological perspectives: balance theory, social comparison theory, and consensual validation.Balance Theory and Cognitive ConsistencyBalance theory, developed by Fritz Heider, posits that individuals seek cognitive consistency in their relationships. When two people share...
347
01:29Bias in Epidemiological Studies
1.6K
Biases can arise at various stages of research, from study design and data collection to analysis and interpretation. Recognizing and addressing these biases is essential to ensure the validity and reliability of epidemiological findings.Broadly speaking, biases in epidemiology fall into three main categories: selection bias, information bias, and confounding. A more detailed description of possible biases is:
1.6K
00:59How Data are Classified: Numerical Data
41.3K
Data that are countable or measurable in specific units are called numerical or quantitative data. Quantitative data are always numbers. Quantitative data are the result of counting or measuring the attributes of a population. Amount of money, pulse rate, weight, number of people living in a town, and number of students who opt for statistics are examples of quantitative data.
Quantitative data may be either discrete or continuous. All quantitative data that take on only specific numerical...
Quantitative data may be either discrete or continuous. All quantitative data that take on only specific numerical...
41.3K
01:14Piaget's Stage 1 of Cognitive Development
2.4K
The sensorimotor stage, the initial phase of Jean Piaget's theory of cognitive development, spans the first two years of a child's life. During this period, infants actively engage with their surroundings, building cognitive awareness through direct interaction with the world. This interaction is primarily based on sensory perception and motor actions, allowing infants to gradually understand basic physical properties and predict how objects interact within their environment.
Exploration...
Exploration...
2.4K