Joel D Block, Ph.D., Personality Profiling - OPW Interview - Online Personals Watch: News on the Online Dating Industry and Business

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Fernando Ardenghi

You do not need to prove a piston engine when you need a jet engine to break sound barrier.

The best personality profiling system will be ..... the one matching persons who will have more stable and satisfying relationships than couples matched by chance, personal preferences, searching on one's own, or other typical type of compatibility test; with low divorce rates (e.g. after 10 years of marriage).

Dr. Block is right when he says "With the rise of dating sites, there are some people who have been trying to turn romance into a branch of applied mathematics. They've been trying to reduce decisions about love into statistical equations. It doesn't work."
It is not working yet because actual online dating sites (eHarmony, True, Chemistry, PerfectMatch, PlentyOfFish, OkCupid, Yahoo!Personals, etc) offering compatibility matching methods could reach as low as 3 / 4 persons high compatible per 1,000 persons, so in a 10,000,000 persons database, there are as many as 30,000 / 40,000 persons to contact/date, that means a whole precision less than anyone could achieve by searching on one's own!!!
eHarmony, True, Chemistry, PerfectMatch, PlentyOfFish, OkCupid, Yahoo!Personals, etc. are using piston engines.

Dr. Block' proposal - ButterfliesAgain Test - is not going to revolutionize the Online Dating Industry because:
* it is based on an ipsative test - similar to the Fundamental Interpersonal Relations Orientation Behavior test, aka: FIRO B- instead of a normative test.
* The compatibility/affinity between prospective mates is only a 2 integer figure like 75%. With a 2 integer figure, the whole precision of the matching algorithm is less than any client could achieve searching by his/her own!!

Dr. Block' proposal is another piston engine.

It is all about high precision. It is all about jet engines.

Kindest Regards,

Fernando Ardenghi.
Buenos Aires.
[email protected]

Pemo Theodore

I am interested as to whether anyone has any stats on the value add for online dating sites who have good relationship assessments? What is the rate of good matches compared to being matched by zip code as per It makes sense that it makes the matching process simple & easy & quicker but for those who need it where is the proof?

Fernando Ardenghi

Hi Pemo:

"where is the proof?" you ask.

Well, my own proof, since the beginning 2003, I had been testing creating several dummy (fake) Male/Female profiles in many online dating sites who claim scientific matching, and I had only analyzed their specifications in others.

I had discovered that proprietary tests or models used by those sites (like eHarmony, True, Yahoo!Personals - WeAttract, Cybersuitors, PerfectMatch, Chemistry, PlentyOfFish Chemistry Predictor, ASoundMatch, NoMoreDates, ThomasKnowsPeople PersonalityPro, DatingDNA, PersonalDNA, Parship, Ulteem - ParPerfeito - DatingDirectAffinity, Be2, ButterfliesAgain, ZonaCitas, ScientificMatch, GenePartner, MatchScale, Mary, MatchWise, eChemistry) could have great precision in measuring different psychological variables, but the matching algorithm they use has low precision when comparing one profile to others. The whole precision (measurement_of_variables + pattern_calculation) is less than anyone could achieve by searching on one's own!
I solved that problem and contacted many researchers/academics and online dating sites, with no success until now.

I had also discovered that many online dating sites who claim scientific matching are only backed by big marketing budgets and they can mask scientific evidence with stupidities like bells, whistles, horns, drums or other diarrhea of marketing devices as *patented unique methodology used to calculate compatibility*, *the best compatibility testing system based on years of research*, *dramatically more accurate than other sites*, *a world_renowned author and expert in the science of human attraction and love who wrote 25,678,947,854,258 books*

I know you had developed AstraMatch, you are currently writing a book on matchmaking and you are also reviewing online dating sites in your blog.

Perhaps you should screen/review online dating sites using this guide:

-----A) TEST

A.1) Brain behind the test.

A.2) test? proprietary or commercial / ipsative or normative / validation / reliability, etc


B.1) Brain behind matching algorithm.

B.2) the ENSEMBLE (the whole set of different valid possibilities)

B.3) About compatibility.
If compatibility means a high degree of similarity between several variables (religion, education, income, personality, personal preferences, likes and dislikes, etc.) between prospective mates
if compatibility means a mix of similarity and complementarity between variables
What does exactly compatibility mean?

B.4) What does exactly similarity mean? and What does exactly complementarity mean?

B.5) How exactly the compatibility matching method works, specifying main matching equation/ formula (without revealing proprietary information).
"a proprietary Dyadic Adjustment Scale"
"a proprietary multivariate linear regression equation"
"a proprietary multivariate logistic regression equation"
"an adapted quantum mechanics math equation"

B.6) How compatibility results are displayed
* only a number: like 110 (Cybersuitors), 96% (PlentyofFish Chemistry Predictor), 65 (Parship), 92.55033557% +/- 0.00000001% (LPM), etc.
* only a graphic system: like a set of up to five empty/half_full/full hearts icon; a set of up to ten empty/half_full/full squares, a set of semaphores, etc.
* a written report like ThomasKnowsPeople

B.7) Average number of "compatible real persons" for one person over the entire database.
* 3 or 4 persons high compatible per 1,000 persons
* 3 most compatible persons in a 100,000 persons database,

C.1) "Divorce rates" of the couples matched by the compatibility matching method after 1 year, 2 years, 5 years, 10 years.

-----D) Scientifc Paper peer_reviewed
Scientifc Paper peer_reviewed showing the compatibility matching method matches persons who will have more stable and satisfying relationships than couples matched by chance, astrological destiny, personal preferences, searching on one's own, or other typical type of compatibility test (like Wilson & Cousins) as the control group; with low 'divorce rates' (e.g. after 2, 5, 10 years of 'marriage').

I have not seen any credible Scientifc Paper yet!!!


Fernando Ardenghi.
Buenos Aires.
[email protected]

James Houran

Dear Pemo,

My team is arguably the industry leader in compatibility measurement and matching. Email me directly if you would like to talk some specifics.


James Houran, Ph.D.

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