On an
Amazon comment page, a mother recently wrote of her concern for her 9-year-old
daughter, who had much difficulty coping with frustration and responded with
lengthy tantrums to everyday problems. The mother sought suggestions for
treatments focused on attachment, and stated that she was now aware that her
own behavior was partially responsible for her daughter’s situation (although
she did not comment on how she knew this or what she felt about her
conclusion).
In
response to the mother’s comment, the following appeared:
“Arthur Becker-weidman says:
DDP would be most helpful for you as it is an evidence-based and empirically validated treatment. See the California Evidence Based Clearinghouse for Child Welfare for their independent review of this and many other approaches.
http://www.cebc4cw.org/program/dyadic-developmental-psychotherapy/ “
For those who have not encountered
Becker-Weidman before, I should point out that he is a clinical social worker
who was at one time associated with Dyadic Developmental Psychotherapy (DDP) as
promulgated by Daniel Hughes. Becker-Weidman and Hughes published several
papers in which they claimed, incorrectly, that there was an acceptable
evidence basis for DDP. The British DDP website, which Hughes now runs together
with Kim Golding, no longer refers to Becker-Weidman’s work, but acknowledges
that there is currently no published evidentiary foundation for DDP.
So, let’s
have a look at the claims Becker-Weidman is making on Amazon.
1. He points
to the California Evidence Based Clearinghouse for Child Welfare
(www.cebc4cw.org), an organization that posts information about child mental
health treatments that are used or marketed in California. I looked into CEBC
in some detail for a presentation at a conference last September and found the
following:
The information posted is obtained by asking developers
of treatments to supply materials that can be used in rating each treatment. Programs
are evaluated and rated according to the following scale (for further details,
see www.cebc4cw.org/files/OverviewOfTheCEBCScientificRatingScale.pdf).
1. Well-Supported
by Research Evidence
2. Supported
by Research Evidence
3.
Promising Research Evidence
4. Evidence Fails to
Demonstrate Effect
5. Concerning Practice
NR. Not able to be Rated
on the CEBC Scientific Rating Scale
CEBC lists
descriptions and findings about 286 programs, primarily for children and
adolescents. Of listed programs, 26 were “non-responders” to inquiries about
empirical support. Programs are rated according to stated criteria from 1
(excellent supportive evidence; 21 programs) to 5 (concerning; 0 programs,
despite connections of some listed programs with adverse events), or Not Rated
when supportive material is insufficient (77 programs). Seventy programs were
rated “promising”.
To be rated 3, promising research evidence, as DDP
was, requires only one nonrandomized study that compares outcomes for treated
individuals to outcomes for some other group. This is a good deal lower bar
than even the 2 rating, which requires one randomized controlled trial;
treatments are properly described as evidence-based only when two independent
randomized controlled trials have shown significant benefit from a treatment.
Incidentally, CEBC was responsive to my query about a
program, Circle of Security, that was listed as “well-supported” although
published research reports did not agree with this evaluation. CEBC took down
the existing statements about Circle of Security and a representative said that
further material would be requested from the program developers. When I have
time, I need to comment to CEBC about the difficulties with research on DDP
that I will come to in a moment.
2. The material Becker-Weidman (or someone) may have
provided to CEBC has serious problems beyond its relatively weak design. As
other authors and I have pointed out in professional publications, the
treatment used in one study and a follow-up published by Becker-Weidman does
not appear to have been DDP as it is presently described by Hughes. The
original study, done in the late ‘90s, appears to have a number of features
that are closely associated with holding therapy (HT), an intrusive and
dangerous unconventional treatment. Becker-Weidman cites in his papers
recommendations to parents to learn and use methods associated with HT,
especially those suggested by the foster parent/dog trainer Nancy Thomas. Given
the likelihood that DDP today does not use those methods, and that
Becker-Weidman’s version did use those methods, it appears that Becker-Weidman
did not do outcome research on DDP, but instead did it on DDP plus some other
treatments, making it impossible to generalize from Becker-Weidman’s conclusions
to current DDP as practiced by Hughes and Golding. A rival hypothesis about
this situation is that Becker-Weidman and Hughes do still use the HT methods
but do not disclose the fact; if true, that would earn DDP the CEBC rating of
5, concerning practice.
As I said earlier, the Hughes and Golding website no
longer references Becker-Weidman’s publications. They would certainly do so if
they thought the work provided evidentiary support for DDP. Becker-Weidman,
however, seems to retain his conviction that “what I tell you three times is
true”.