57 votes
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If babies were isolated, would they develop their own language?

This question would require an experiment that cannot ethically be conducted, but it is interesting. Wikipedia has an article on historical attempts at language deprivation experiments: An ...
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17 votes
Accepted

Conscious basis for gender identification

A conscious basis for gender identification? There is currently no evidence to suggest that conscious experiences are a factor in leading a transgender person to identify with the opposite sex. ...
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15 votes

What is the effect of viewing pornography on children?

Pornography laws are a relic of the Victorian era, and not based on any science. Research that can conclusively determine the effect of pornography on children is hard to come by due to the resultant ...
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10 votes
Accepted

Does classical music enhance intelligence in children more than other genres?

A great overview of this topic is available in Chapter 6 of the book The Invisible Gorilla by Chabris & Simons. My answer is based, in large part, on their summary of the topic. The "Mozart ...
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10 votes
Accepted

Do women have fetishes?

For a non-clinical sample in a study on paraphilic sexual interests, Dawson et al. (2016) report that Fisher’s exact test of proportions revealed that a significantly greater proportion of men ...
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  • 745
8 votes
Accepted

Name of a cognitive test assessing whether a child can think independently

The first one is a test if a child has understood conservation of matter. It is an example of a conservation task. These belong to the tests used in the framework of Piaget to test what stage of ...
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  • 2,414
8 votes
Accepted

how can the development of sexual preferences be influenced?

A bit of background on me: I’m a clinical psychologist and have worked with many sexual disorders, ranging from paedophile, to gender identity disorder. I am however no expert in any of these, so my ...
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8 votes

If babies were isolated, would they develop their own language?

While no cases of complete isolation of a group of children seem to exist, idioglossia (language invented and spoken by only one person or very few people) in twins is well documented and appears to ...
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  • 9,915
7 votes
Accepted

Dynamical systems theory as a metaphor in psychology: is it useful or not?

Like all models and modeling frameworks, the utility of the approach is often tied to how much it increases our understanding of the phenomena of interest. As summarized nicely by Smith & Thelen (...
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7 votes

Why do people look in the face or eyes while communicating?

Eye contact is one of the principal cues humans use to evaluate where other people direct their attention. A special issue on the use of eye tracking in the Infancy journal and other studies reported ...
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6 votes
Accepted

What article looked at the relationship between bedtime stories and national productivity?

I believe this is referring to David McClelland's 1961 book "The Achieving Society."* McClelland proposed that an achievement motivation (desire for achievement) could predict economic growth and ...
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  • 1,551
6 votes
Accepted

Father hunger syndrome

This is a large subject area, but I will outline a strong starting point for you to do more research where needed. James M. Herzog's (1980) term Father Hunger, sometimes referred to as a syndrome, ...
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  • 11.1k
6 votes
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What happens to someone missing teenage years of development?

Whilst typing this answer I upvoted this question as it points to very interesting theories of drive, motivation, and personal development. Short Answer If you take on board the theories surrounding ...
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  • 11.1k
5 votes

Why do people look in the face or eyes while communicating?

I don't have a complete answer, but I'll add on to Christian's comment. I'm not really familiar with an evolutionary account of facial expressions, but folks like Adam K. Anderson have implied that ...
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  • 4,256
5 votes
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Is there any evidence of a relationship between learning music and increased ability in Mathematics?

There is a clear association between musical ability and mathematical ability, perhaps best recognised in savantism in people with developmental disabilities. There are limited domains in which ...
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  • 376
5 votes
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How similar are the brains of twins?

Biondi et al. (1998) compared MR images of monozygotic twins and found that while the brains of monozygotic twins are not identical, they are similar. Relevant for understanding the concordance rate ...
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  • 2,617
5 votes
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Does creativity decrease when invested in multiple areas?

There are two sources of creativity, the within-domain analogies and the between-domain analogies. Within-domain analogies are less original but more easy to apply and use. Between-domain analogies ...
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5 votes
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Psychological effects of being recorded as genderless at birth

This is an interesting question and with the baby and his/her gender status, CNN reported that the baby was born in British Columbia, "outside the medical system," and did not undergo a genital ...
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  • 11.1k
5 votes

What is the optimal way to run the Piaget Conservation of Number Task?

Particular attention should be given to the theoretical framework (Piaget's Theory and constructivist perspective), hypotheses to contrast (levels), information gathering and common difficulties. "...
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  • 1,039
5 votes

Does James Holmes diagnosis of schizotypal personality disorder indicate a predisposition for mass murder?

So the question is does schizotypal personality disorder explain lifelong homicidal ideation / obsession, or predisposition to same? Schizotypal personality disorder does include paranoid ideation ...
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  • 9,915
4 votes

What causes fetishes? Are they sexual disorders?

Having one or more fetishes is very widespread, and thus rather normal. The prevalence of fetishism is not known with certainty.[21] The majority of fetishists are male.[21] In a 2011 study, 30% ...
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  • 3,729
4 votes

Where does the distinction between motives and goals lie in activity theory?

I think the confusion arises because the hierarchy of "activity" as described in that figure exist in the context of an ontology that is closer to dynamical perception-action cycles than to the ...
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4 votes
Accepted

What causes people to rapidly lose skill after becoming moderately good at something?

S-shaped learning curves As per A Umar Mukthar's comment, the phenomenon is known as an S-shaped learning curve. They have been a known phenomenon in psychology for many decades, and were originally ...
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4 votes

Dynamical systems theory as a metaphor in psychology: is it useful or not?

Dynamical systems models is commonly used in the domain of perception and action. See Warren, 2006 for a comprehensive review. This work uses the mathematical formalism of dynamics and not just the ...
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4 votes
Accepted

Can a person with multiple personality disorder have one of their personality based on a real person?

The article you link to is fairly comprehensive, and probably already answers your questions. Dissociative Identity Disorder is no longer referred to as multiple personality disorder. This is a ...
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4 votes

Does individual understanding or perception, determine dream lucidity?

I am unsure if you mean, if the ability to lucid dream comes with age? or if the type or degree of lucidity within the dream is different depending on the individual? So I will aim for a ballpark ...
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  • 2,396
4 votes

What if people understand or interpret words differently in their mind?

Quite certainly this is the case (even if you learn all words from a dictionary), but this is more of a philosophical debate. It is unclear what you are after when referring to 'pessimistic', '...
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  • 3,471
4 votes
Accepted

How does parental expectation lead a child from adaptive perfectionism to rebelliousness?

Childhood/adolescent rebelliousness could be explained by psychological reactance theory (Brehm, 1966) and self-determination theory (Ryan & Deci, 2000). Psychological reactance theory, Brehm ...
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  • 2,396
4 votes

What are "daddy issues"?

"Daddy issues" is not a well-defined term, however, the extrapolation of attachment style theory answers to this question somewhat. Relationship outcomes of different attachment styles (this is not ...
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