The network structure of schizotypy in the general population

Schizotypal personality traits show similarity with schizophrenia at various levels of analysis. It is generally agreed that schizotypal personality is multidimensional; however, it is still debated whether impulsive nonconformity should be incorporated into theories and measurement of schizotypy. In addition, relatively little is known about the network structure of the four-dimensional model of schizotypal personality. To estimate the network structure of schizotypy, we used data from participants recruited from the community (N = 11,807) who completed the short version of the Oxford-Liverpool Inventory of Feelings and Experiences, a widespread self-report instrument that assesses the positive, negative, disorganised and impulsive domains of schizotypy. We performed community detection, then examined differences between communities in terms of centralities and compared the strength of edges within and between communities. We found communities that almost perfectly corresponded to the a priori-defined subscales (93% overlap, normalised mutual information = 0.74). Items in the disorganisation community had higher closeness centrality relative to items in the other communities (Cliff’s Δs ranged from 0.55 to 0.83) and weights of edges within the disorganisation community were stronger as compared to the negative schizotypy and impulsive nonconformity communities (Cliff’s Δs = 0.33). Our findings imply that the inclusion of impulsive nonconformity items does not dilute the classical three-factor structure of positive, negative and disorganised schizotypy. The high closeness centrality of disorganisation concurs with theories positing that cognitive slippage and associative loosening are core features of the schizophrenic phenotype.

The Network Structure of Schizotypy in the General Population

Schizotypal personality traits show similarity with schizophrenia at various levels of analysis. It is generally agreed that schizotypal personality is multidimensional, however, it is still debated whether impulsive nonconformity should be incorporated into theories and measurement of schizotypy. In addition, relatively little is known about the network structure of the four-dimensional model of schizotypal personality. To estimate the network structure of schizotypy, we used data from participants recruited from the community (N = 11807) who completed the short version of the Oxford-Liverpool Inventory of Feelings and Experiences, a widespread self-report instrument that assesses the positive, negative, disorganised and impulsive domains of schizotypy. We performed community detection, then examined differences between communities in terms of centralities and compared the strength of edges within and between communities. We found communities that almost perfectly corresponded to the a priori defined subscales (93% overlap, normalized mutual information = 0.74). Items in the disorganisation community had higher closeness centrality relative to items in the other communities (Cliff’s Δs ranged from 0.55 to 0.83) and weights of edges within the disorganisation community were stronger as compared to the negative schizotypy and impulsive nonconformity communities (Cliff’s Δs = 0.33). Our findings imply that the inclusion of impulsive nonconformity items does not dilute the classical three factor structure of positive, negative and disorganised schizotypy. The high closeness centrality of disorganisation concurs with theories positing that cognitive slippage and associative loosening are core features of the schizophrenic phenotype.

Psychopathic costs: a monetization study of the fiscal toll of psychopathy features among institutionalized delinquents

Purpose That psychopathy imposes substantial societal costs and economic burden is axiomatic, but monetization studies have overlooked cost estimates of the disorder. The paper aims to discuss these issues. Design/methodology/approach Drawing on a near census of institutionalized delinquents from Missouri, the current study devised new crime cost measures for self-reported offending. Findings Youth imposed $30 million in total costs annually in large part due to extensive involvement in robbery, theft, and assault. The most criminally active youth imposed costs in excess of $700 million. Psychopathy features were differentially correlated with crime costs. APSD-SR callous-unemotional traits, mPPI-SF Blame Externalization, mPPI-SF Machiavellian Egocentricity, and mPPI-SF Social Potency were significantly associated with between four and five crime costs. Psychopathic traits associated with ruthless self-interest, callousness, and expectations to control and dominate others manifest in diverse ways including serious violence and repeated property crime. Other features such as mPPI-SF Impulsive Nonconformity, mPPI-SF Stress Immunity, mPPI-SF Coldheartedness, mPPI-SF Carefree Nonplanfulness, mPPI-SF Fearlessness, APSD-SR Impulsivity, and APSD-SR Narcissism had limited associations with crime costs. Originality/value To the authors’ knowledge, this is the first monetization study to quantify the effects of assorted psychopathy features on crime costs.

Transliminality and the Oxford-Liverpool Inventory of Feelings and Experiences

Transliminality is a hypothesized tendency for psychological material to cross thresholds into or out of consciousness. The 29-item Revised Transliminality Scale was administered to 186 students and members of the general population in Australia and the UK along with the Oxford-Liverpool Inventory of Feelings and Experiences, a multidimensional measure of schizotypy. As predicted, scores on transliminality correlated .78 with those on Unusual Experiences, suggesting that the scales measure the same factor. Transliminality scores also correlated (.18, p = .008) significantly but weakly with scores on Impulsive Nonconformity, as predicted, and weakly (but not predicted) ( r = .25, p < .001) with Cognitive Disorganization scores but not with Introvertive Anhedonia or the Lie scale.