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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 experiment allegedly carried out by Holy Roman Emperor Frederick II in the 13th century saw young infants raised without human interaction in an attempt to ...


17

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. Additionally, there is mounting evidence that transgender children are statistically indistinguishable from children of the gender with which they identify, meaning ...


15

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 ethical environment. Most research depends on self-reports: Surveys ask adolescents how much pornography they have been exposed to, and attempt to correlate ...


11

A useful model for topics like this comes from McCrae and Costa (1999): There's quite a lot more going on here than is pertinent to your question, but note that influences originate from biological bases on the top left, and from external influences on the upper right. Everything else is modeled as an effect of mediated, dynamic processes between these two.....


10

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 Effect" was originally reported by Rauscher, Shaw, & Ky (1993). In the experiment, college students completed a set of typical IQ tests. Before taking the tests, ...


10

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 reported arousal to activities related to voyeurism, fetishism, sadism, biastophilia, and urophilia compared with women (all ps < .05). A greater proportion of ...


8

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 development a child is in. Here is a video demonstration of the cookie task. Here is another question on this site pertaining to a different conservation task. The ...


8

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 answer is based on my own clinical experience and reading of the literature. Most of my colleagues, and me, think that the general answer is: no – there is not ...


7

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 (2003), there are developmental questions that are better conceptualized through the framework of DST than through alternative modeling frameworks due to the ...


7

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 that infants' eyes are useful measures of attention over a range of task domains including object perception (Johnson, Slemmer, & Amso, 2004), faces (Hunnis ...


7

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 be amplified by social isolation, as the sad cases of June and Jennifer Gibbons aka "Silent Twins" and the "San Diego twins" Poto and Cabengo illustrate. The ...


6

vand den Bos et al (2002) van den Bos et al (2002) summarises research over various ages. They reported: The reading task was to read in 1 min, as fast and accurately as possible, the unique and unrepeated words of a stan- dardized word-reading test. Results indicate that word-reading speed and naming speeds of colors and pictures continue to ...


6

Motherese may play a role in emotional development. Soken and Pick write: "Concurrent with the exaggerated speech of motherese, there are probably exaggerated facial displays, allowing infants to explore the particular aspects of the face... Child-centered displays may serve as opportunities for learning about affective events." Walker-Andrews (1997) also ...


6

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 success. He examined this from a range of social and individual psychological factors, including the achievement content of "cultural products" such as children's ...


6

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, and sometimes referred to as the Father Complex may have its roots in many theories developed over the years. Those who subscribe to Psychodynamic theories, the ...


6

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 life-span human development, there is an element of truth in your hypothesis. Elements of immaturity and impulsiveness can still linger for various reasons ...


5

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 savantism appears to occur, including mathematical calculations, reproducing music instantly, recalling specific facts, and perfect-perspective drawing. There are a ...


5

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 the original use of facial features for sensory sampling have been co-opted for social use (e.g., to indicate attention, which Christian pointed out, or affect, ...


5

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 of schizophrenia in monozygotic twins, Suddath et al. (1990) examined MR images of monozygotic twins who where discordant for schizophrenia. They found that the ...


5

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 are far more original but usually need a lot of work to apply them in the target domain. (see this book for more info) Within-domain analogies may be quite ...


5

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 inspection after birth, campaign group Gender Free I.D. Coalition said in a statement. Short Answer There seems to be no clinical consensus on any psychological ...


5

Particular attention should be given to the theoretical framework (Piaget's Theory and constructivist perspective), hypotheses to contrast (levels), information gathering and common difficulties. "Levels" in quantity conservation test: Level of absence of term-to-term correspondence: 4-5 years. Simple intuition. Consider the global and static configuration ...


5

So the question is does schizotypal personality disorder explain lifelong homicidal ideation / obsession, or predisposition to same? Schizotypal personality disorder does include paranoid ideation among its symptoms. Paranoid ideation has been linked to homicidal behavior in some studies Patients who reported homicide attempts could be distinguished from ...


4

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 evolutionary information processing ontology typically used in cognitivist approaches. The world is structured; it comprises discrete objectively existing ...


4

To extend on @BenCole comment, an interesting summary of different models of time perceptions can be found in this paper. These models are in a sense more descriptive than the fundamental biological hypothesis mentioned by caseyr547, so you might not be ready to call these "explanations", depending on what you mean by that. The models attempt to give a ...


4

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% of men reported fetishistic fantasies, and 24.5% had engaged in fetishistic acts. Of those reporting fantasies, 45% said the fetish was intensely sexually ...


4

Counting, easily. It's a matter of rote and repetition, dominated by procedural learning. Critical thinking requires more advanced circuitry and learning. There is a lot of really rapid neural development still occurring in the first couple years and children are learning from society and parents and experience in the meantime. During this time, they can ...


4

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 attributed to trial-and-error learning sets (Harlow, 1949). Harlow defined a learning set in the following manner: The monkeys learn how to learn individual ...


4

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 metaphorical concepts. An exploration of the references of Warren's paper, as well as of papers that have cited it, will find many examples of dynamical models of ...


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