Carlo Chiorri ‘s Psychometric Pages

September 19, 2017

Individual differences in Self-consciousness and Mind wandering

Filed under: Uncategorized — chiorri @ 4:01 pm

A nice paper by Manila Vannucci and me soon to appear in Personality and Individual Differences. Plus, the Italian version of Trapnell and Campbell (1999)’s Rumination-Reflection Questionnaire.

PAID_Rum_Ref_MW_ESM

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July 14, 2017

Italian version of the Dirty Dozen (Jonason & Webster, 2010)

Filed under: Uncategorized — chiorri @ 5:58 pm

Please cite as:

Chiorri, C., Garofalo, C. & Velotti, P. (2017). Does the Dark Triad manifest similarly in men and women? Measurement invariance of the Dirty Dozen across sex. Current Psychology, Advanced Online Publication, doi: 10.1007/s12144-017-9641-5

Italian_Dirty_Dozen

June 8, 2017

Italian version of the Toronto Empathy Questionnaire

Filed under: Uncategorized — chiorri @ 4:10 pm

Please cite as:

Chiorri, C., (2016). Competing factor structures for the Toronto Empathy Questionnaire. In D. Watt, & , J. Panksepp (Eds), The Neurobiology and Psychology of Empathy (pp. 399-432). New York: Nova Science Publishers, Inc.

Italian_TEQ

TEQ_italian_scoring

May 2, 2017

Italian version of the Mind Wandering: Deliberate and of the Mind Wandering: Spontaneous (and not only) scales

Filed under: Uncategorized — chiorri @ 11:05 am

Here you can find the Italian version of some scales for assessing mind wandering that Manila Vannucci and I adapted into Italian. The document contains the validated Italian versions of the Mind Wandering: Deliberate, Mind Wandering: Spontaneous, Attention Control: Distraction, Attention Control: Shifting (Carriere et al., 2013), Daydreaming Frequency Scale (Giambra, 1993), Mind Wandering Questionnaire (Mrazek et al., 2013).

Carriere, J. S. A:, Seli, P., & Smilek, D. (2013). Wandering in both mind and body: Individual differences in mind wandering and inattention predict fidgeting. Canadian Journal of Experimental Psychology/Revue Canadienne de Psychologie Expérimentale, 67(1), 19–31. doi:10.1037/a0031438

Giambra, L. M. (1993). The influence of aging on spontaneous shifts of attention from external stimuli to the contents of consciousness. Experimental Gerontology, 28(4-5), 485–492. doi:10.1016/0531-5565(93)90073-M

Mrazek, M. D., Phillips, D. T., Franklin, M. S., Broadway, J. M., & Schooler, J. W. (2013). Young and restless: Validation of the Mind-Wandering Questionnaire (MWQ) reveals disruptive impact of mind-wandering for youth. Frontiers in Psychology, 4, 560. doi:10.3389/fpsyg.2013.00560

MW_manuscript_ESM_accepted

Getting started in the right way

Filed under: Uncategorized — chiorri @ 11:04 am

When developing a new psychological test, you try do it as soon as possible and run quickly along the validation study. But doing such things as avoiding the preliminary study in which you should test the initial item pool, you make yourself blind to wording errors and response biases, and sooner or later you will be obliged to re-start from the very beginning. But if you pay attention to the coverage of the target domain, and focus on within-construct issues instead of putting a premature emphasis on between-networks research, then you may discover that you actually saved research time.  This understanding extends to every psychological test. 

January 13, 2017

Approfondimenti, Strumenti Informatici, riferimenti bibliografici e soluzioni degli esercizi per i volumi Fondamenti di Psicometria e Teoria e Tecnica Psicometrica

Filed under: Uncategorized — chiorri @ 10:08 am

Ogni tanto qualcuno mi scrive chiedendomi dove può trovare Approfondimenti, Strumenti Informatici e riferimenti bibliografici dei miei manuali. Tali informazioni possono essere recuperate ai seguenti link:

Approfondimenti+Strumenti Informatici

riferimenti-bibliografici_totale

Soluzioni_Esercizi

 

June 27, 2015

Italian version of the Ten Item Personality Inventory / Versione italiana del Ten Item Personality Inventory

Filed under: Uncategorized — chiorri @ 11:56 pm

You might need the Italian version of  Sam Gosling’s Ten Item Personality Inventory (here the official website).

My colleagues and I devised a new (and better) translation and published it:

Chiorri, C., Bracco, F., Piccinno, T., Modafferi C., & Battini, V. (2014). Psychometric properties of a revised version of the Ten Item Personality Inventory. European Journal of Psychological Assessment, DOI: 10.1027/1015-5759/a000215 (here a pre-print version: TIPI_Manuscript_final).

The scale I-TIPI

SPSS scoring syntax (in Word format) TIPI_scoring_reliability

May 1, 2015

Supplementary Materials for the paper Testing the factor structure and measurement invariance across gender of the Big Five Inventory through Exploratory Structural Equation Modeling (doi: 10.1080/00223891.2015.1035381)

Filed under: Uncategorized — chiorri @ 9:27 pm

You might be interested in reading the Supplementary Materials mentioned in my paper:

Chiorri, C. , Marsh, H. W., Ubbiali, A., & Donati, D. (2015). Testing the factor structure and measurement invariance across gender of the Big Five Inventory through Exploratory Structural Equation Modeling. Journal of Personality Assessment, doi: 10.1080/00223891.2015.1035381.

Here they are BFI_ESEM.

July 26, 2012

There is nothing more deceptive than statistics

Filed under: Uncategorized — chiorri @ 10:15 am

Somewhere in the “The Boscombe Valley Mystery” Sherlock Holmes says “There is nothing more deceptive than an obvious fact”. Well, actually, I would rephrase the quotation as “There is nothing more deceptive than statistics”.

I was reading Daniel Kahneman’s awesome book “Thinking: Fast and Slow” (which I strongly recommend), when I found the following paragraph:

Researchers measure the strength of relationships by a correlation coefficient, which varies between 0 and 1. The coefficient was defined earlier (in relation to regression to the mean) by the extent to which two measures are determined by shared factors. A very generous estimate of the correlation between the success of the firm and the quality of its CEO might be as high as .30, indicating 30% overlap (p. 205).

Now, one of my eyebrows raised after reading the first sentence. Anybody who has ever had the dubious privilege of teaching statistics in psychology programs knows that one of the first things that students learn about the correlation coefficient is that it can range from -1 to 1 – sadly, sometimes it is its only property that they can list when asked. But that’s ok, if we’re speaking about the strength of the relationship the sign is not an issue, so let’s get over it. But then I read that if the correlation between the variables is .30, there is 30% overlap. I might have been misinterpreting the whole passage, but when speaking of “shared factors” and “overlapping” I can’t help thinking about “shared variance”, and shared variance is definetely not indexed by the correlation coefficient. Instead, it’s the coefficient of determination, which is the squared correlation coefficient (which, incidentally, ranges from 0 to 1). So, if the correlation between two measures is .30, the shared variance is .09, i.e., 9%.

Some time ago I pointed out the same issue to a journalist, and, ironically, in the same book Kahneman (which is only a living legend of psychology, a Princeton emeritus professor and a Noble Prize laureate) tells about his research about the ways in which statistics can be misunderstood and provides very nice explations of why this happens.

December 7, 2008

Be Prepared

Filed under: Uncategorized — chiorri @ 1:53 pm

There are two things that will blemish a psychometrician, and these are rich grants and honor. If one but remains in strained circumstances, he will not be marred.

Once there was a certain researcher who was very clever, but it was his character to always see the negative points of his jobs. In such a way, one will be useless. If one does not get it into his head from the very beginning that research is full of unseemly situations, for the most part his demeanor will be poor and he will not be believed by others. And if one is not believed by others, no matter how good a person he may be, he will not have the essence of a good scientist. This can also be considered as a blemish.

It is not good to settle into a set of opinions. It is a mistake to put forth effort and obtain some understanding and then stop at that. At first putting forth great effort to be sure that you have grasped the bastes, then practicing so that they may come to fruition is something that will never stop for your whole lifetime. Do not rely on following the degree of understanding that you have discovered, but simply think, “This is not enough”.

One should search throughout his whole life how best to follow the Way. And he should study, setting his mind to work without putting things off. Within this is the Way.

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